A motorboat can maintain a constant speed of 15 miles per hour relative to the water. The boat makes a trip upstream to a certain point in 57 minutes; the return trip takes 33 minutes. What is the speed of the​ current?

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step-by-step explanation:

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.

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step-by-step explanation: could you give me 5 stars