Interest rate formula
simple px rxt
interest =
100
simple interest worksheet
p = principal
r = rate
t = time
1) a) the formula for simple interest is: spot
b) rearrange this formula to find:
i) time:
ii) the interest rate:
iii) the principal:

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.