Mailyn loves cookies. she can eat 32 in an hour. her brother juan, however, needs 3 hours to eat the same amount of cookies. how long will it take them to eat 40 cookies together?

we know that

1) Mailyn can eat 32 cookies in an hour

1 hour  is equal to 60 minutes

Find how cookies eats Mailyn in one minute

by proportion

2) Juan needs 3 hours to eat 32 cookies

Find how cookies eats Juan in one minute

by proportion

3) Find how long will it take them to eat 40 cookies together

we know that

Maylin and Juan eats in one minute together ---------> (0.53+0.18)=0.71 cookies

so

by proportion

therefore

the answer is

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.