Kel's answer to liang liang's Primary 6 Maths Fractions Singapore question.
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$64 - $16 = $48
Total cost of BB = $48/2 = $24
Total cost of RB = $64 - $24 = $40
or $24 + $16 = $40
$24/2 = $12
$40/5 = $8
$12 - $8 = $4
$4/$0.20 = 20
Number of RB = 20 x 5 = 100
Cost of 1 red button = $40/100
= $0.40 (Ans)
Total cost of BB = $48/2 = $24
Total cost of RB = $64 - $24 = $40
or $24 + $16 = $40
$24/2 = $12
$40/5 = $8
$12 - $8 = $4
$4/$0.20 = 20
Number of RB = 20 x 5 = 100
Cost of 1 red button = $40/100
= $0.40 (Ans)
Date Posted:
3 years ago
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