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1. A 45,000 liter water tank is to filled at the rate 220 liters per minute. Estimates to the nearest half hour, how long it will take to fill the tank?
- A. 4 hours
- B. 4 hours
- C. 4 hours
- D. 4 hours
Answer: Option B
Explanation:
Assume that the tank fills in x minutes
By Direct Proportion,
x1/y1 = x2/y2
220/1 = 45000/x
x = 45000/220
x = 204.54
x = 205 minutes (approx.)
Divide x by 60 in order to convert from Minutes to Hours
⇒ 205/60 = 3.41 hours
Estimating to nearest half hours,
The 45000 L tank is filled in 3.5 hours at the rate of 220 L/m
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