A parking lot is 4/5 full. There are currently 80 cars in the parking lot. How many cars need to leave the parking lot to make the lot 1/5 full? A. 100
B. 60
C. 40
D. 20
E. 10

Scarlet bought three pairs of sunglasses and two shirts for $81 and paula bought one pair of sunglasses and five shirts for $105 what is the cost of one pair of sunglasses and one shirt?

Need solving this second acceleration problem.

Acabinmaker buys 3.5 liters of oat varnish the varnish cost $4.95 per liter what is the total cost of 3.5 liters