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primary 5 | Maths | Fractions
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Lucas
Lucas

primary 5 chevron_right Maths chevron_right Fractions chevron_right Singapore

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Date Posted: 1 week ago
Views: 26
snell
Snell
1 week ago
after
chco: 21u
lolli: 20u+8

41u + 8 = 213
u = 5

at first, 175 choco bars

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Let A be chocolate bar and B be lollipop
B - A = 14
B =14 + A
After sales
3/5 A + 4/7 B = 213
21A + 20B = 7455
Sub B = 14 + A into equation
21A + 20(14 + A) =7455
21A + 20A + 280 =7455
41A = 7175
A = 175
Therefore there were 175 chocolate bar at first.
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Yang
Yang's answer
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