AC Lim's answer to Chan Rong Xuan's Primary 5 Maths Fractions Singapore question.
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Let total pupils = 20u (common multiple of 4 and 5)
Walk a jog , ¼= 5/20 =5u
Remaining = 15u
St soccer,3/5 = 9/15 =9u
Left=6u is basketball
Points:
Walk a jog = 5u × 6 =30u
St soccer = 9u × 5 =45u
Basketball = 6u × 4 =24u
Total all = 99u
99u = 4950
1u = 50
Total pupils = 20u =20×50 =1000 pupils.
Walk a jog , ¼= 5/20 =5u
Remaining = 15u
St soccer,3/5 = 9/15 =9u
Left=6u is basketball
Points:
Walk a jog = 5u × 6 =30u
St soccer = 9u × 5 =45u
Basketball = 6u × 4 =24u
Total all = 99u
99u = 4950
1u = 50
Total pupils = 20u =20×50 =1000 pupils.
Date Posted:
4 years ago
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