A laboratory has two calcium carbonate sources: a reagent-grade powder that is CaCO…

MATHEMATICS · Subjective · CBSE · Mathematics · Pair of Linear Equations in Two Variables · Pair of Linear Equations in Two Variables

Problem

A laboratory has two calcium carbonate sources: a reagent-grade powder that is

98.0\%

CaCO

_3

by mass and an ore that is

60.0\%

CaCO

_3

by mass. What masses of each source are required to prepare

250.\,\text{g}

of a mixture that is

85.0\%

CaCO

_3

by mass? Report the required mass of the

98.0\%

powder first, followed by the mass of the ore.