Question

an ore contains 15% copper.how many kilograms of the ore will be required to get 72kg ogive copper??

Answer 1

hey
here is ur answer
ANSWER IS =480
I hope this will help
#PREM

Answer 2

Answer:

To get 72 kg copper 480 kg ore will be required.

Step-by-step explanation:

The ore contains 15% copper.

By unitary method,

∵ 15 kg copper is extracted from ore = 100 kg

∴ 1 kg copper will be extracted from ore = $\frac{100}{15}$ kg

∴ 72 kg copper will be extracted from ore = $\frac{100\times 72}{15}$

                                                                      = 480 kg.

Therefore, to get 72 kg copper 480 kg ore will be required.

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