This is from chapter percentage. Question: an ore contains 20% zinc. How many kg of ore will be required to get 45 kg of zinc?
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Let,
The required amount of ore be xkg
Given,
An ore contains 20% zinc
A/Q,
20% of x = 45
=> 20/100 × x = 45
=> x = 45 × 4
=> x = 180 kg.
Required amount of ore is 180kg
Hope it helps !!
The required amount of ore be xkg
Given,
An ore contains 20% zinc
A/Q,
20% of x = 45
=> 20/100 × x = 45
=> x = 45 × 4
=> x = 180 kg.
Required amount of ore is 180kg
Hope it helps !!
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