How can you express (15 + 30) as a multiple of a sum of whole numbers with no common factor?

a)2 × (7.5 + 15)
b)3 × (5 + 10)
c)5 × (3 + 6)
d)15 × (1 + 2)

The oates family went out for dinner the price of the meal was $33.95 the sales tax was 7.25% of the price of the meal . the tip was 15% of the meal and the sales tax . how much money did the oates family pay for the meal, including tax and tip