Question

The length of a rope is decreased by 121/2.what is the new lenght if it was 150?

Answer 1

Answer:

as it was 150

so now decreased length will be 150-121/2=179/2=89.5

Answer 2

Answer:

the length of rope = 150

Decrease (d)=121/2=6.5

L=150 (100-6/100)

150×93.2/100

13980/100=139.8

the new length of rope =139.8