Question

The dolphins at the San Diego zoo eat 3 1/8 buckets of fish each day. The killer whales eat 2 3/5 times as much fish as the dolphins.

How many buckets of fish do the killer whales eat each day?

Answer 1

8 5/40

Explanation:

1 = 8/8

3 = 24/8.

24+1 = 25

2 = 10/5

10+3 = 13

5*8 = 40

25*13 = 250 + 75 = 325

325/40 = 8 5/40

Answer 2

Number of buckets of fish eaten by killer whales is
`(65)/(8)` or
`8(1)/(8)`

Solution:

Given that dolphins at the San Diego zoo eat
`3(1)/(8)` buckets of fish each day

Number of buckets of fish eaten by Dolphins =
`3(1)/(8) = (3 * 8 + 1)/(8) = (25)/(8)`

Also given that killer whales eat
`2(3)/(5)` times as much fish as the dolphins.

Which means number of fishes eaten by killer whales is
`2(3)/(5)` multiplied by number of fishes eaten by dolphins

So number of fish eaten by killer is:

`\text {number of fish eaten by killer }=2 (3)/(5) * \text { number of fish eaten by dolphins }`

`\text {number of fish eaten by killer }=2 (3)/(5) * (25)/(8)=(13)/(5) * (25)/(8)=(65)/(8)`

Thus the number of buckets of fish eaten by killer whales is
`(65)/(8)` or
`8(1)/(8)`