Amixture of concrete is made up of sand and cement in a ratio of 5 : 3, how many cubic feet of each are needed to make 160 cubic feet of concrete mix

We need 160 cubic feet of concrete mix and 20 x 8 = 160, so we need to use 20 x 5 = 100 cubic feet of sand and 20 x 3 = 60 cubic feet of cement

Step-by-step explanation:

3/4 ÷ 3/4

step-by-step explanation:

basically divide any proper fraction with itself to fit the criteria.

so if we are using 3/4, then:

3/4 ÷ 3/4 = 1

so 1 is the quotient.

and the numerators for both these fractions is 3.   and if we divide the numerators:

3 ÷ 3 = 1

we see that quotient is equal to our original quotient as well.