Question

if 80 meter long piece of elastic is increased in ghe ratio of 9:8 find its increased length.?​

Answer 1

Step-by-step explanation:

let the common ratio be x

hence , total length=9x

increased length=8x. (for total length>increased length)

9x=80

x=80/90

hence

80x=80/90×80

=640/9=71.11

Answer 2

Step-by-step explanation:

let x be the increased length

9 : 8 = 9x + 8x

Now,

9x + 8x = 80

17x = 80

× = 80/17

x = 4.705

Here,

9(x) = 9(4.705)

= 42.3529

8(x) = 8(4.705)

= 37.6470

therefore,

the elastic increased 42.3529m + 37.6470m