How to do ratio questions

First you need to identify what the known ratio and and the unknown one

Then you need to setup the proportion.

After that cross multiply and then solve

Lastly check your answer by plugging the result into the unknown ratio and you should get your answer.

d.) yes, because the volume of the cone is greater than the volume of the sphere

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.