The Brandywine River is at its flood stage of 9 ft is continuing to rain the next measurement shows that the river has risen 1 and 1/12 ft and additional measurement shows that the river has risen 1 and 5/12 ft how many more feet does the river need to rise to be at the major flood stage of 13 ft express your answer in simplest form

Question

The Brandywine River is at its flood stage of 9 ft is continuing to rain the next measurement shows that the river has risen 1 and 1/12 ft and additional measurement shows that the river has risen 1 and 5/12 ft how many more feet does the river need to rise to be at the major flood stage of 13 ft express your answer in simplest form

Answer 1

To find how many more feet the river needs to rise to be at the major flood stage of 13 ft, we need to add the current measurements to the flood stage measurement and subtract the sum from 13 ft.

The first measurement is 1 and 1/12 ft.
The second measurement is 1 and 5/12 ft.

Adding these two measurements together gives us: 1 and 1/12 + 1 and 5/12 = 2 and 2/12 + 5/12 = 2 and 7/12 ft.

To find how many more feet the river needs to rise to reach the major flood stage of 13 ft, we subtract this sum from 13 ft: 13 - 2 and 7/12 = 13 - 31/12.

To subtract fractions, we need to have a common denominator. The denominator of 13 is 12, so we rewrite 13 as 12/12.

12/12 - 31/12 = (12 - 31)/12 = -19/12.

Therefore, the river needs to rise an additional 19/12 ft to reach the major flood stage of 13 ft.