A shop buys pairs of trainers for £20 each. They sell them to make a 30% profit on each pair. What is the selling price of the trainers

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

Find the balance at the end of 4 years if 1000 is deposited at the rate of

Anyone know? will mark brainliest if you're correct!