Amy worked 37.5 hours last week she is paid £11.50 per hour her total deductions last week were £116.30 what was Amy’s net pay

At a pizza shop 70% of the customers order a pizza 25% of the customers order a salad and 15% of the customers order both a pizza and a salad if s customer is chosen at random what is the probability that he or she orders either a pizza or a salad