sydelle tay's answer to Codmo's Primary 5 Maths Percentage Singapore question.
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40% of the original amount (a) is given to the mother
30% out of the remainder = the remainder is now 100%
Using the remainder left as 60%
30%x60 = 18%
So magazine is 18% out of the original amount (a)
Find the left over is 42%
50%=1/2
1/2 of the 42% is how much he spend on food
40%-21%= $95
30% out of the remainder = the remainder is now 100%
Using the remainder left as 60%
30%x60 = 18%
So magazine is 18% out of the original amount (a)
Find the left over is 42%
50%=1/2
1/2 of the 42% is how much he spend on food
40%-21%= $95
Date Posted:
1 year ago
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