Tan Yick Loong's answer to Lele's Primary 6 Maths Percentage Singapore question.
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100% b + 100% g = 960
40% b + 40% g = 384
40% g = 384 - 40% b --- statement 1
When 25% of b and 60% of g left,
75% b = 40% g +30
75% b - 30 = 40% g -- statement 2
statement 1 = statement 2
384 - 40%b = 75%b - 30
384+30 = 75% b + 40% b
414 = 115% b
B = 414/115 X 100 = 360
100% b + 100% g = 960
40% b + 40% g = 384
40% g = 384 - 40% b --- statement 1
When 25% of b and 60% of g left,
75% b = 40% g +30
75% b - 30 = 40% g -- statement 2
statement 1 = statement 2
384 - 40%b = 75%b - 30
384+30 = 75% b + 40% b
414 = 115% b
B = 414/115 X 100 = 360
Date Posted:
3 years ago
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