Question

Tarinda's corn plant was 7- 1/3 inches tall at the end of Week 1. The corn plant was 18 1/2 inches tall at the end of Week 2. How many inches did the corn plant grow during Week 2?

Answer 1

The corn plant grew by 11.17 inches during week 2.

Explanation:

7 and 1/3 inches tall at the end of Week 1.

The height at the end of week 1, as a simple fraction, is:

`7 + (1)/(3) = (3*7 + 1)/(3) = (22)/(3)`

The corn plant was 18 1/2 inches tall at the end of Week 2.

At the end of week 2, the height will be of:

`18 + (1)/(2) = (18*2+1)/(2) = (37)/(2)`

How many inches did the corn plant grow during Week 2?

Height at the end of week 2 subtracted by the height at the end of week 1. So

`(37)/(2) - (22)/(3) = (3*37-2*22)/(6) = (67)/(6) = 11.17`

The corn plant grew by 11.17 inches during week 2.