Asked by YEOW
5kg of flour and 4kg of sugar cost $14.80. If 3/4kg of flour cost as much as 3/5kg of sugar, what is the cost of 1kg of sugar?
Answers
Answered by
ANON
x = cost of 1kg flour
y = cost of 1kg sugar
5x + 4y = $ 14.80
x = (14.80 - 4y)/5
3x/4 = 3y/5
(3/4)*[(14.80 - 4y)/5] = 3y/5
2.22 - 0.6y = 0.6y
1.2y = 2.22
y = $1.85
x = $1.48
y = cost of 1kg sugar
5x + 4y = $ 14.80
x = (14.80 - 4y)/5
3x/4 = 3y/5
(3/4)*[(14.80 - 4y)/5] = 3y/5
2.22 - 0.6y = 0.6y
1.2y = 2.22
y = $1.85
x = $1.48
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