I don’t get the andwer

If 1 is divided by the sum of y& 4.the result is equal to 3 divided by 4, find the value of m

When you arrive at the lake, your friend realises he hasn’t got any swimming trunks. you need to ride to a sports shop. the sports shop is 8350 metres away. how many metres is it to cycle there and back?

You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25