Divide 55 in a ratio 3 : 7
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16.5 : 38.5

Step-by-step explanation:

sum the parts of the ratio, 3 + 7 = 10 parts

Divide the amount by 10 to find the value of one part of the ratio.

55 ÷ 10 = 5.5 ← value of 1 part of the ratio, then

3 parts = 3 × 5.5 = 16.5

7 parts = 7 × 5.5 = 38.5

55 in the ratio 3 : 7 is 16.5 : 38.5

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.