If Jane spends 1/10 of her day doing homework and of that homework time 1/4 is spent doing math work. What fraction of her day is spend doing math homework

Question

Would like to know how to set this up to find the answer not just the answer itself. The only constants known is there are 24 hours in a day in which she spends 1/10 of that time doing homework. Out of the 1/10 amount of time she spends a 1/4 of it on math what fraction of her day is spent doing math homework.

Answer 1

Of the 1/10 spent doing homework, 1/4 is spent doing math, so the fraction that represents time spent doing math is 1/4 of 1/10, which is the product

(1/4)(1/10) = 1/40

Jane spends 1/40 of the day doing math.