Given:
A shoe repairman is working with his assistant, who takes 1.5 times as long to repair a pair of shoes.
Together they can fix 20 pairs of shoes in an eight-hour day.
Required:
To find the number of hours to taken the repairman to fix one pair of shoes by himself.
Explanation:
Let a = no. of shoes done by the assistant in an 8 hr day.
Then 1.5a = no. of shoes done by the repairman
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