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exis [7]
2 years ago
7

7. This year, the water in a reservoir dropped by 60%. For the original water level to be restored next year, by what percent mu

st the remaining reserves increase?
Mathematics
1 answer:
ale4655 [162]2 years ago
8 0

Answer:

Given: Water in a reservoir dropped by 60%

Step-by-step explanation:

let the total water level of reservoir be 100.

then, in first year

the water reservoir dropped = 60% of 100

                                               =\frac{60}{100} * 100

                                               = 60

therefore, total water level needed to be restored till next year= 100

remaining water level to restore till next year= 100-60

                                                                           =40

                                                       percentage= \frac{40}{100} * 100

                                                                         =40%

                     

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