Mary is baking cookies. She needs milk, flour and sugar. One packet of milk costs
twice as much as flour and 1 packet of sugar costs half as much as milk. Mary spent P270 on 3 packets of milk, 1 packet of flour and 2 packets of sugar. Find the cost of 1 packet of sugar.
twice as much as flour and 1 packet of sugar costs half as much as milk. Mary spent P270 on 3 packets of milk, 1 packet of flour and 2 packets of sugar. Find the cost of 1 packet of sugar.
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2x+x+[2x(½)] x is the cost of flour
270= 2x(3)+x(1)+{3[2x(½)]}
270=6x+x+3x add
270=10x divide both sides by 10
27=x
So the cost of sugar is 3x
=3(27)
=81 pesos
Checking:
270=6(27)+27+3(27)
270= 162+27+3(27)
270= 162+27+81
270=270