Divide the product of 45 and 25 by the sum of 53 and 37.

12.5

Step-by-step explanation:

First you multiply 45 and 25, which equals 1,125. Then you add 53 & 27, you get 90. You divide the 1,125 by 90 and get 12.5

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.