If they denominator stays the same in the numerator increases what happens to the fractions ?

Ineed with 14, 16, 28 and 36 me. we didn't go over them in class so i don't know what to do.

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?

The expression 1.01*1.005(^t) gives the amount of money, in thousands of dollars, in carter's savings account (t) years after he opens it. what does 1.01 represent in this expression?