Math, asked by wasukumeti4337, 1 year ago

Chalk contains 10 percent calcium, 3 percent carbon , 12 percent oxygen ad the remaining sand. Find the amount of carbon and calcium in 2.5 kg of chalk. Also find the amount of sand.

Answers

Answered by mayur0031
3
the chalk contain 3%carbon
so, it's contain 2.5×3%=2.5×3/100
=3/40kg
transfer into gram
so, 1000×3/40=75
chalk contain 75g carbon
calcium contain 10%
so, it's contain 0.25 kg=250g
sand contain 100-(10+3+12)=100-25=75
so, sand contain 2.5×75/100=7.5/4kg
so, sand contain 7.5×1000/4=1475g
hope it is useful for you
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