Question

10. The length and breadth of a rectangle
are in the ratio 7:4. If the length is
doubled and breath is increased by 6 cm
the ration of the length and breadth
becomes 2:1. find the length and breadth
of rectangle .​

Answer 1

Answer:

let I be the length of rectangle and b be the

breadth of rectangle

=>I:b=7:4

=>l/b=7/4

=>l=7b/4

given length is doubled and the breadth is

increased by 6

=>2l/(b+6)=2/1

=>l/(b+6)=1

substitute I=7b/4

=>7b/4=b+6

=>7b=4b+24

=>3b=24

=>b=8

substitute b =8 in I=7b/4

=>I=7(8)/4

=>l=14

so the length and breadth is 14 and 8

hope it helps

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