Darren Lim's answer to Amber~'s Primary 5 Maths Decimals Singapore question.
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0.4 kg of rice + 0.5 kg of barley —> $1.76
0.8kg rice + 1kg of barley —> $1.76x2 =$3.52 — equation 1
From question,
0.8kg of rice + 2kg of barley —> $5.12 —equation 2
Equation 2- equation 1
1kg of barley —> $5.12-$3.52= $1.60— equation 3
Equation 1 - equation 3
0.8kg of rice —> $3.52-$1.60=$1.92
1kg of rice —> $1.92 x (1/0.8) =$2.40
0.8kg rice + 1kg of barley —> $1.76x2 =$3.52 — equation 1
From question,
0.8kg of rice + 2kg of barley —> $5.12 —equation 2
Equation 2- equation 1
1kg of barley —> $5.12-$3.52= $1.60— equation 3
Equation 1 - equation 3
0.8kg of rice —> $3.52-$1.60=$1.92
1kg of rice —> $1.92 x (1/0.8) =$2.40
Date Posted:
4 years ago
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