HELP I NEED YOUR HELP

You decide instead to take the train there. the train will take 135 minutes. convert this into hours and minutes.

How far could you drive on 50 gallons of gas

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of