Write the pairs of fractions as a pair of fractions with a common denominator
3/10 and 2/5
1/3 and 3/4

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