Chaz -52.00 bill -59.25 they owe these money's from bank who owes more money from bank?

Tanya has $42 to spend at the dolphin island store. tshirts sell for $7 each and a pair of sunglases sells for $6.tanya buys 3 tshirts. how many pairs of sunglases can she buys with the amount of money she has left

(60 points) explain this in detail

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.