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Agam answered 1 year(s) , 2 month(s) ago

Due to increase in the price of sugsr by 25%, by how much percent must a householder

If the price of a commodity increases by R%, then the reduction in consumption so as not to increase the expenditure is
Here R% = 25%
Hence % decrease in the consumption of sugar

Asked by Snehil

Aug 19

  • 2 Answers
  • 4 Likes
  • 38683 Views
Syeda answered 1 year(s) , 7 month(s) ago

A Sells a bicycle to B at a profit of 20% and B sells it to C at a profit of 25%

Let the cost price of the bicycle for A be Rs x
Given A sells the bicycle at a profit of 20%

This becomes the CP for B.
Hence CP of bicycle for B = (6x/5)
Given B sells...

Asked by Vineet

Jul 30

  • 15 Answers
  • 6 Likes
  • 37401 Views
Syeda answered 1 year(s) , 8 month(s) ago

ABCD is a quadrilateral then prove that AB + BC + CD + DA < 2(AC + BD)?

ABCD is a quadrilateral and AC, and BD are the diagonals.
Sum of the two sides of a triangle is greater than the third side.
So, considering the triangle ABC, BCD, CAD and BAD, we get
AB...

Asked by Principal

Dec 29

  • 4 Answers
  • 1 Like
  • 35425 Views
Syeda answered 1 year(s) , 7 month(s) ago

A fruit-seller had some apples.He sells 40% of them and still has 420 apples

Answer.

    60% of x= 420
60/100x = 420
60x       = 42000
x           = 42000/60
             = 700
So he had 700 apples in total

Asked by Snehil

Aug 17

  • 4 Answers
  • 4 Likes
  • 34687 Views
Syeda answered 1 year(s) , 8 month(s) ago

Find the cost of carpeting a room .

Sol:
Length of the room = 13 m
Breadth of the room = 9 m
Area of the room = l × b = 13 × 9 = 117 m 2
Let the length of the carpet required = 'l' m
Width of th...

Asked by Nitin

Dec 16

  • 3 Answers
  • 6 Likes
  • 29674 Views
Syeda answered 1 year(s) , 8 month(s) ago

Draw a rough sketch of two triangles such that they have five pairs of congruent parts but still the triangles are not congruent.

Answer.

A pair of triangles with three equal angles, and two equal sides are non-congruent.

Ex:

  • SME Approved

Asked by Harshita

May 23

  • 3 Answers
  • 5 Likes
  • 26688 Views
Syeda answered 1 year(s) , 8 month(s) ago

How to construct 110 degree angle using ruler and compass only. please tell in simple words

No, 110° angle cannot be made with compass and ruler. It can be only made with a protracted as 110 is not a multiple of fifteen. Oly those angles can be constructed with compass and ruler which are multiple of...

Asked by Aman

Oct 24

  • 11 Answers
  • 5 Likes
  • 24670 Views
Om commented 11 month(s) , 20 day(s) ago

The square lawn is surrounded by a path 2.5m wide. If the area of the path is 165 Sq., find the area of lawn.

Answer.

Consider the side of the lawn be x

Given width of the path = 2.5m

Side of the lawn including path = x + 2(2.5m) = x + 5m

So, area of lawn = (Area of the lawn includin

...

  • 2 Answers
  • 2 Likes
  • 20263 Views
Syeda answered 1 year(s) , 8 month(s) ago

After 12years manoj will be 3 times as old as he was

Let the present age of Manoj be x years
After 12 years Manoj's age = (x + 12) years
4 year ago Manoj's age = (x − 4) years
Hence (x + 12) = 3(x − 4)
⇒ x + 12 = 3x − 12
⇒...

Asked by Snehil

Jul 11

  • 14 Answers
  • 7 Likes
  • 18257 Views
Syeda answered 1 year(s) , 7 month(s) ago

A certain freezing process requires that room temperature

The temperature is decreasing 5 degree Celsius per hour, so in 10 hours =10 X 5 = 50 degree celcious. Then, 40 - 50 = -10 degree celcious

Asked by Shirin

Mar 11

  • 6 Answers
  • 2 Likes
  • 17987 Views
Raghunath answered 4 year(s) , 2 month(s) ago

Find 5 rational numbers between -1 and 0.

Sol:
Given numbers -1 and 0.

Rational numbers between 2 numbers a and b is ( a + b) / 2.

Rational numbers between 2 numbers -1 and 0 is

= ( -1 + 0) / 2 = -1/ 2

...

Asked by Japhar

Dec 4

  • 2 Answers
  • 2 Likes
  • 17899 Views
Haritha answered 3 year(s) , 10 month(s) ago

Divide 184 in two parts such that one-third of one part may exceed one-seventh

Let one part be x
∴ The other part is (184 – x)
One-third of x = (x/3)
One-seventh of other part  
Given that one-third of one part exceeds one-seventh of other part by 8....

Asked by Sauravkumar

Aug 6

  • 3 Answers
  • 4 Likes
  • 16153 Views
Kishore answered 5 year(s) , 4 month(s) ago

If x + 1/x = 5 then X4 + 1/X4= ?


Squaring on both the sides, we get

Squaring on both the sides again, we get

Asked by Nilabhro

Sep 29

  • 1 Answer
  • 3 Likes
  • 15726 Views
Raghunath answered 4 year(s) ago

Find the value of n.

Sol:
Given 2 n-7 * 5 n-4  = 1250

Here 1250 = 2 x 5 x 5 x 5 x 5 = 2 x 5 4

Now 2 n-7 × 5 n-4 × 2 3 =...

Asked by Kalaivani

Jan 10

  • 1 Answer
  • 1 Like
  • 14683 Views
Raghunath answered 3 year(s) , 11 month(s) ago

An article was sold for rs 250 with a profit of 5% .what is its cost price.



Selling price of an article = Rs 250

Profit = 5%

Cost price = (100 x SP) / ( 100 + gain)

Cost price = (100 x 250) / 105

Cost price...

Asked by Ishanbansal

Feb 25

  • 1 Answer
  • 4 Likes
  • 13219 Views
Sagar answered 4 year(s) , 9 month(s) ago

ax+by=c and ay+bx=c+1 find the value of x and y

Given equations are  ax+by = c  --------------(1)  and  ay+bx = c+1  --------------(2)
multiply  equation (1) by 'b' and  equation (2)  by 'a' we get
     abx+b 2y = bc 
    ...

Asked by Harish

May 5

  • 2 Answers
  • 0 Like
  • 12995 Views
Syeda answered 1 year(s) , 7 month(s) ago

Find the width of the room.

Let the width of the room be 'b' m
Length of the room = 15 m
Area of the room = 15 × b = 15b m 2
Total cost of carpeting = Rs 19200
Cost of carpet per metre = Rs 80...

Asked by Nitin

Dec 16

  • 3 Answers
  • 3 Likes
  • 12336 Views
Natish answered 4 year(s) , 3 month(s) ago

A property dealer charges commission at the rate of 2% on Rs 200000

Given commission on Rs 2, 00,000 is 2%.
Commission on Rs 200001 to Rs 400000 is 1%
Commission above Rs 400001 is 0.5%
Value of the property sold is Rs 5,40,000
Commission = 2% of...

Asked by Snehil

Aug 19

  • 2 Answers
  • 2 Likes
  • 12101 Views
Syeda answered 1 year(s) , 7 month(s) ago

Mean of first 50 whole numbers

Answer.

The mean = sum/50
formula for finding sum of first n natural numbers=[n(n+1)]/2
So the sum of first 50 natural numbers=(50*51)/2
 = 1275
So the mean=1275/50=25.5

...

Asked by Sriraaj

Sep 27

  • 4 Answers
  • 0 Like
  • 12012 Views
Kishore answered 5 year(s) , 5 month(s) ago

36% of the maximum marks are required to pass a test.A

Let the maximum marks be x
Given that the students got 123 marks
Also it is given that he is failed by 39 marks
Hence marks required to pass = 123 + 39 = 162
That is 36% of x = 1...

Asked by Snehil

Aug 17

  • 1 Answer
  • 2 Likes
  • 11918 Views
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