"A Model A Day, Keeps The Algebra Away" - Chi Hung Chan Focus primarily on upper primary school (P4,5,6) mathematicsNo guess and check, no wordy solution, just "Model" answerMy SIX STEPS TO MODEL APPROACHA must visit website for Singapore PSLE
2/9 of the runners in a race are boys.3/7 of the remaining runners are men.1/4 of the rest are girls. There are 42 more women than girls. How many runners are there in the race?
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