The length of a rectangle is increased b...

The length of a rectangle is increased by 60%. By what percent would the width have to be reduced to maintain the same area ?

`37 (1)/(2)%`

60%

75%

120%

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Find the appropriate relation for quantity 1 and quantity 2 in the following question : Quantity 1 : In an examination, Ankita scored 35 marks less than Puneeta. Puneeta scored 65 more marks than Meenakshi. Rakhi scored 115 marks, which is 20 marks more than Meenkashi's . Simpy scored 108 marks less than the maximum marks of the test. What approximate percentage of marks did Simpy score in the examination, if she got 67 marks more than Ankita ? Quantity 2 : The length of a rectangle is increased by 60% . By what percent would the width have to be decreased to maintain the same area ?

The length of a rectangle is increased by 30%. By what percent would the breadth have to be decreased to maintain the same area?

The length of a rectangle is reduced by 30%. By what percent would the width have to be increased to maintain the original area?

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Knowledge Check

The length of a rectangle is increased by 60% . By what percent would the width have to be decreased to maintain the same area ?

`37 1/2%`

`60%`

`75%`

None of these

The length of a rectangle is increased by 60%. By what per cent would the width have to be decreased to maintain the same area ?

`37%`

`32%`

`37(1)/(2)%`

None of these

The length of rectangle is increased by 60%. By what per cent would the width have to be decreased to maintain the same area?

1.25

0.755

0.5

0.375

S CHAND IIT JEE FOUNDATION-PERIMETER AND AREA -QUESTION BANK - 21(A)

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