Total number of students at school is 2100. If ratio of boys to girls is 3 to 4, how many student are boys?

if this is really you s much. i only have 3 points left and i have 2 questions to ask

the answer is simply just 6n add the two together as they have an n

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.