Question

A baby otter was born 3/4 of a month early. At birth it's weight was 7/8 kilograms which is 9/10 kilogram less than the average weight of a new born otter in the aquarium. What is the average weight of new born otter

Answer 1

Explanation:

Answer 2

The average weight of new born otter was,
`1(31)/(40)`

Explanation:

Let average weight of new born otter be x.

As per the given statement: At birth it's weight was 7/8 kilograms which is 9/10 kilogram less than the average weight of a new born otter in the aquarium

"
`(9)/(10)` kg less than average weight of a new born otter" means
`x-(9)/(10)`

As per the given information, we have;

`(7)/(8) = x -(9)/(10)`

Add
`(9)/(10)` both sides, we have;

`(7)/(8) + (9)/(10) = x`

Take LCM of 8 and 10 is, 40

⇒
`(35+36)/(40)=x`

Simplify:

`x = (71)/(40) = 1(31)/(40)`

Therefore, the average weight of new born otter was,
`1(31)/(40)`