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Apr 28, 2014

A plane left 30 min later than the scheduled time and in order to reach the destination 1500km away in time it has to increase the speed by 250km/h from the usual speed. Find its usual speed

This answer has an image. Please click on the question to read more.

Manmohan

May 18, 2014

Q4.(iv)

places A and B are 100 km. apart on a highway.One car starts from A and another from B at the same time.If the cars travel in the same direction at different speeds,they meet in 5 hours.If they travelled towards each other,they meet in 1 hoyr.What are the speeds of the two cars?

places A and B are 100 km. apart on a highway.One car starts from A and another from B at the same time.If the cars travel in the same direction at different speeds,they meet in 5 hours.If they travelled towards each other,they meet in 1 hoyr.What are the speeds of the two cars?

This answer has an image. Please click on the question to read more.

Sri haripriya Ramesh

Jul 15, 2012

A motorboat takes 6 hours to cover 100km down

stream and 30km upstream. If the motorboat goes 75km down stream and returns

back to its starting point in 8hours, find the speed of the motorboat in still

water and the rate of the stream

stream and 30km upstream. If the motorboat goes 75km down stream and returns

back to its starting point in 8hours, find the speed of the motorboat in still

water and the rate of the stream

This answer has an image. Please click on the question to read more.

Greeny joby

Jul 20, 2013

2) x/a^{2} + y/b^{2}=2

This answer has an image. Please click on the question to read more.

Rishabh mehta

Jul 30, 2013

A two digit number 3 times more than 4 times the sum of its digit . If 18 is added to the number the digits are interchanged . Find the number .

Question should be "A two digit number is 3 more than 4 times the sum of its digit . If 18 is added to the number ...

Aubrey herbert

Sep 27, 2013

Solve x/a + y/b = a+ b

x/a2 + y/b^{2} = 2

Thanks in advance

x/a2 + y/b

Thanks in advance

This answer has an image. Please click on the question to read more.

Harsha Bohra

Jun 14, 2014

solve through elimination ax/b-by/a=a+b&ax-by=2ab

This answer has an image. Please click on the question to read more.

Utpal

Aug 14, 2013

A train travels a distance of 300 km at a uniform speed. If the speed of the train is

increased by 5km an hour, the journey would have taken two hours less. Find the original speed

of the train.

increased by 5km an hour, the journey would have taken two hours less. Find the original speed

of the train.

This answer has an image. Please click on the question to read more.

Sandeep

Jul 24, 2013

solve for x and y:

mx-ny=m^{2}+n^{2};x-y=2n

mx-ny=m

Pranav Satti

Aug 28, 2014

The perpendicular from A on side BC of a triangle ABC intersects BC at D such that DB = 3CD prove that 2AB^{2} = 2AC^{2 }+ BC^{2}

This answer has an image. Please click on the question to read more.

P duraisami

Apr 28, 2014

A plane left 30 min later than the scheduled time and in order to reach the destination 1500km away in time it has to increase the speed by 250km/h from the usual speed. Find its usual speed

This answer has an image. Please click on the question to read more.

Manmohan

May 18, 2014

Q4.(iv)

places A and B are 100 km. apart on a highway.One car starts from A and another from B at the same time.If the cars travel in the same direction at different speeds,they meet in 5 hours.If they travelled towards each other,they meet in 1 hoyr.What are the speeds of the two cars?

places A and B are 100 km. apart on a highway.One car starts from A and another from B at the same time.If the cars travel in the same direction at different speeds,they meet in 5 hours.If they travelled towards each other,they meet in 1 hoyr.What are the speeds of the two cars?

This answer has an image. Please click on the question to read more.

Sri haripriya Ramesh

Jul 15, 2012

A motorboat takes 6 hours to cover 100km down

stream and 30km upstream. If the motorboat goes 75km down stream and returns

back to its starting point in 8hours, find the speed of the motorboat in still

water and the rate of the stream

stream and 30km upstream. If the motorboat goes 75km down stream and returns

back to its starting point in 8hours, find the speed of the motorboat in still

water and the rate of the stream

This answer has an image. Please click on the question to read more.

Greeny joby

Jul 20, 2013

2) x/a^{2} + y/b^{2}=2

This answer has an image. Please click on the question to read more.

Rishabh mehta

Jul 30, 2013

A two digit number 3 times more than 4 times the sum of its digit . If 18 is added to the number the digits are interchanged . Find the number .

Question should be "A two digit number is 3 more than 4 times the sum of its digit . If 18 is added to the number ...

Aubrey herbert

Sep 27, 2013

Solve x/a + y/b = a+ b

x/a2 + y/b^{2} = 2

Thanks in advance

x/a2 + y/b

Thanks in advance

This answer has an image. Please click on the question to read more.

Harsha Bohra

Jun 14, 2014

solve through elimination ax/b-by/a=a+b&ax-by=2ab

This answer has an image. Please click on the question to read more.

Utpal

Aug 14, 2013

A train travels a distance of 300 km at a uniform speed. If the speed of the train is

increased by 5km an hour, the journey would have taken two hours less. Find the original speed

of the train.

increased by 5km an hour, the journey would have taken two hours less. Find the original speed

of the train.

This answer has an image. Please click on the question to read more.

Sandeep

Jul 24, 2013

solve for x and y:

mx-ny=m^{2}+n^{2};x-y=2n

mx-ny=m

Pranav Satti

Aug 28, 2014

The perpendicular from A on side BC of a triangle ABC intersects BC at D such that DB = 3CD prove that 2AB^{2} = 2AC^{2 }+ BC^{2}

This answer has an image. Please click on the question to read more.