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 an additional measurement shows that the river has a risen 1 and 5/12 ft how many more feet does a river need to ride to be at the majors flood stage of 13 ft express your answer in simplest form

To find out how many more feet the river needs to rise to reach the major flood stage of 13 ft, we need to add up the additional measurements already provided.

1 and 1/12 ft + 1 and 5/12 ft

To add these fractions, we need to find a common denominator. The common denominator for 12 and 12 is 12.

1 + 1/12 = 12/12 + 1/12 = 13/12

Now we can add the fractions:

13/12 + 5/12 = 18/12

Now we can simplify this fraction:

18/12 = 3/2

Therefore, the river needs to rise an additional 3/2 ft to reach the major flood stage of 13 ft.