Answer:
5/6
Explanation:
√ if 1/2 test = 3/5hour
? = 1hour
√ 1/2test*1hour÷3/5hour
√ 1/2 test hour÷3/5hour
√ 1/2÷3/5test
√ 1/2*5/3 test
√ 5/6 test or 0.83333....
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