a shoe store that sells only boots and sandals had 20% more pairs of boots than sandals in its inventory . After receiving a shipment of 20 more pairs of sandals, the store had a total of 306 pairs of shoes. How many pairs of boots did the store have?

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.

Cal's go cart has a gas tank with the dimensions shown below. he uses a gas can that holds 11 gallon of gas, to fill the go cart tank. 11 gallon = 231 inches^3 how many full gas cans will it take to fill the go cart's gas tank?

Plzz ! need the answer asap! 7% of 980