What is the question exactly?
Martin will earn $350 for 28 hours of work.
Step-by-step explanation:
Given,
Amount earned in 7 hours = $87.50
Ratio of time to amount earned = 7:87.50
Let,
x be the amount earned in 28 hours.
Ratio of time to amount earned = 28:x
Using proportion;
Ratio of time to amount earned :: Ratio of time to amount earned

Product of mean = Product of extreme

Dividing both sides by 7

Martin will earn $350 for 28 hours of work.
Keywords: ratio, proportion
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What we need to know is how much is 1/3 of 25 2/5.
We will be multiplying fraction by a fraction and for this, it's good to change mixed numbers into improper fractions:
25 2/5=

and now we multiply it by 1/3:

and that's the answer: the basketball equipment weights 7 4/5 pounds.