To put this least to greatest order, we will convert each fraction in to a decimal, and then compare. To change a fraction to a decimal we have to divide the numerator by the denominator. Lets do it:-
3/4
3 ÷ 4 = 0.75
3/4 = 0.75
7/8
7 ÷ 8 = 0.875
7/8 = 0.875
3/5
3 ÷ 5 = 0.6
3/5 = 0.6
Decimals:- 0.75, 0.875, 0.6. Lets put these in order, from least to greatest.
0.75, 0.875, 0.6. .
So, 3/4, 7/8, 3/5.
Hope I helped ya!! xD