Q14: do 70 pages over 3 minutes then do 420over x then cross multiply and then you get 70x=1260 .Then you divide 70 on both sides and end up with 18 minutes.
Q15: take 60 loaves over 8 minutes then put x over 12 minutes. And cross multiply! You end up with 8x=720 then you divide 8 on both sides and your answer is 90 loaves.
Q16: take 6oz over 5 cups then take 3 oz over x and cross multiply. You end up with 6x=15 divide 6 on both sides you end up with 2 1/2 cups! Hope I helped you