80. If the value of X and Y in the fraction XZN are both tripled, how does the value of the fraction change? Increases by half? Remains the same? Triples? Decreases by half?

Remains the same

Step-by-step explanation:

Given

Required

What happens when the X and Y are tripled;

When both X and Y are tripled, the new fraction is represented below:

When the numerator and denominator are divided by their common factor (3), the new fraction becomes

Compare the new fraction with the initial fraction; one would notice that they have the same value;

Hence, the fraction remains the same

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.