Answer: 8 hours.
Step-by-step explanation:
Given:- A river is rising at a rate of 3 inches per hour.
⇒ In one hour, the increase in the level of river= 3 inches
If the river rises more than 2 feet, it will exceed flood stage.
⇒ the level of river must be less than 2 feet
We know that, 2 feet=2×12 inches [1 foot= 12 inches]
⇒ 2 feet = 24 inches
Thus time taken to rise at the same rate without exceeding flood stage
= i.e. Time taken to reach 24 inches=
= 8 hours.
Area model is used to illustrate multiplication and division operations.
See attachment for the area model
The equation can be represented as:
Express 2080 as 1200 + 800 + 80
Express as
Divide
See attachment for the area model
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