Dj's answer to Catherine Wee Mui Chin's Primary 5 Maths Fractions Singapore question.
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x = origianl amount
x - 1/5x + 5 after d = 4/5 x + 5 remaining
(4/5x+5) - (2/3 ( 4/5 x + 5) +3 ) = 4/15 x - 4/3 remaining after A
then Ben takes 1/4 leaving 3/4 3/4 (4/15 x - 4/3) = 21
x = originally 110
x - 1/5x + 5 after d = 4/5 x + 5 remaining
(4/5x+5) - (2/3 ( 4/5 x + 5) +3 ) = 4/15 x - 4/3 remaining after A
then Ben takes 1/4 leaving 3/4 3/4 (4/15 x - 4/3) = 21
x = originally 110
Date Posted:
3 years ago
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