During the summer time, kevin tried to finish his math assignment within 4 days. he
finished 54 problems in the first two days, and 90 problems in the 2nd, 3rd and 4th day.
if he finished of the total number of 1/5 problems on the second day, how many
problems are in his assignment?

Step one
Add together all of the problems solved

E.g.
54 + 90 = 144

Step two

If 144 equals one fifth of the problems assigned then to figure out how many problems are in the whole assignment you need to times 144 by 5
= 720

Step three

The answer is 720 problems on his assignment

Hope this helped :)

You can find the area of a rectangle by multiplying the length and height. so multiply 1/2*7/4(which is the simpler version of 1 3/4) and you get 7/8 as your answer.

If i think this is what your asking, he should look at the grams or pounds/ounces and compare the to their cost then max can identify which one is proportional and which is not ( i think xd)