Question

water goes over Niagara Falls at the rate of 180 million cubic feet every 1/2 hour. how much water goes over the Falls in 1 minute? Answer in proportions

Answer 1

Answer:

6×10⁶ cubic feet

30:1

Step-by-step explanation:

Water goes over Niagara Falls at a rate of 180 million cubic feet every $\frac{1}{2}$ hours.

Now, 180 million cubic feet ≡ 18×10⁷ cubic feet

and $\frac{1}{2}$ hours =30 minutes.

As the water is falling at a constant rate, hence, the unitary method of calculation can be applied.

Therefore, in 1 minute, the amount of water that goes over the falls will be  

18×10⁷/30 =6×10⁶ cubic feet.

So, the amount of water passing over the falls is reduced in the ratio 30:1. (Answer)