Question

A city has two water towers. one tower holds 7.35 x 10^5 gallons of water and the other tower holds 9.78 x 1065 gallons of water. what is the combined water capacity of the two towers

Answer 1

7.35 x 10^5 = 735,000
9.78 x 1065 = 10,415.7

now you can add them

I suspect a typo in 9.78 x 1065

Answer 2

7.34 x 10^5 = 735,000
9.78 x 10^5 = 978,000

978,000 + 735,000 = 1,713,000 or 1.713 x 10^6 gallons of water