Question

The sum of lengths of two pipes is 45 m and the difference is 13 m. What is the length of smaller pipe?

Answer 1

Answer:

16m

Explanation:

let larger pipe be a and smaller pipe be b

then a+b=45 and a-b=13 add both

2a=58...a=29

then b=16

Answer 2

let us assume

the length of larger pipe be 'x' and

length of smaller pipe be 'y'

so, according to given condition ,

sum of two no.ie.(x+y=45)

their difference x-y=13

Explanation:

by solving the above two conditions

x+y=45

x-y=13.

2y=32

therefore y=16m (ie.length of larger pipe)

by sbstituting the x value in x-y=13

x-16=13. y=29m

therefore the length of smaller pipe be 29m