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Ket [755]
2 years ago
13

at noon a tank contains 10 cm of water after several hours it contains 7 cm of water what is the percent decrease of water in th

e tank
Mathematics
1 answer:
ad-work [718]2 years ago
3 0

Answer:

30%.

Step-by-step explanation:

We have been given that at noon a tank contains 10 cm of water after several hours it contains 7 cm of water.

To find the decrease percent we will use formula:

\text{Decrease percent}=\frac{\text{Original value-new value}}{\text{Original value}}\times 100

Upon substituting our given values in above formula we will get,

\text{Decrease percentage of water in the tank}=\frac{10-7}{10}\times 100

\text{Decrease percentage of water in the tank}=\frac{3}{10}\times 100

\text{Decrease percentage of water in the tank}=3\times 10=30

Therefore, the percentage decrease of water in the tank is 30%.

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3 years ago
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