Question

When Roberto got a puppy from the shelter, it weighed 11 pounds. The puppy gained 40% of it's original weight in the first month that Roberto had it. How much did the puppy weigh after the first month?

Answer 1

10% of 11 is 1.1×4=4.4
4.4+11=15.4
15.4 pounds

Answer 2

15.4 pounds

Explanation:

Given: Roberto got a puppy from the shelter, it weighed 11 pounds. The puppy gained 40% of it's original weight in the first month that Roberto had it.

To Find: How much did the puppy weigh after the first month.

Solution:

Weight of puppy when Roberto got it from shelter =
`11`
`\text{pounds}`

percentage gain in puppy's weight after one month =
`40` % of original weight

therefore,

Total weight of Roberto's Puppy after first month =
`140\% (\text{original weight})`

that is,

Total weight of Roberto's Puppy after first month=
`(140)/(100)* (\text{original weight})`

putting value,

Total weight of Roberto's Puppy after first month=
`(140)/(100)* 11`

=
`(140*11)/(100)`

=
`(1540)/(100)`

=
`15.4`
`\text{pounds}`

Hence, the puppy weighs
`15.4`
`\text{pounds}` after the first month