Me with these two question

debbie is making punch for the company holiday party. she has made 3 gallons and then has an additional 3 quarts. when she arrives at the party the only liquid dispenser is measured in liters. if each dispenser holds 4 liters, how many does she need?
a) 3
b) 4
c) 14
d) 15

a furniture builder who has been commissioned to custom build some bookcases. he goes and measures the space but only had a meter stick with him. finds that the length is 2 meters, the height is 4 meters and the depth is 50 centimeters.

you are to build the shell of the bookcases. you can only buy lumber in 1 inch by 12 inches by 8 feet though. how much lumber do you need to buy?
a) about 8 boards
b) about 11 boards
c) about 39 boards
d) about 40 boards