Question

An investment is currently worth 1.2×107 dollars . Twenty years ago, the investment was worth ​ 9.6×105 ​ dollars. How many times greater is the value of the investment today than the value of the investment twenty years ago? a. 0.125

b. 12.5
c. 125
d. 12,500

Answer 1

B.12.5, 1.2x10^7 is 12,000,000, and 9.6x10^5 is 960,000, 12,000,000 divided by 960,00 equals 12.5

Answer 2

Current worth of the investment =
`1.2(10^(7) )`

Worth of the investment 20 years before =
`9.6(10^(5) )`

To find the number of times greater, we have to divide.

Number of times greater =
`(current worth)/(worth 20 years before)`

`=(1.2(10^(7) ))/(9.6(10^(5) ))`

`=(1.2(10^(2) ))/(9.6)`

`=(120)/(9.6)`

= 12.5

Hence, the correct option is (b).