Question

Question #22953

Answer 1

1. round 72.6 to 72 and 39 to 40 `72/40 = 1.8`

2. round 43.6 to 40 leave 8 to 8 `40/8 = 5`

Explanation:

Compatible numbers can be a number of possible combinations.

For example 72.6 could also be rounded up to 80 instead of 72.
`80/40 = 2` a simpler whole number but less precise.

72 can be divided by 4, forty is a multiple of 4 so 72 is easily and evenly divisible by 40. This made the answer 1.8 fairly precise and easy to divide.

40 is easily divisible by 8 The next closest number divisible by 8 is 48 This would give an answer of 6, which is further from the exact quotient than 5.