In a village there are 639 children 4/7 of the total are boys and of these boys 8/11 go to school . Of the boys at school 2/9 are at primary school . How many boys are there who go to primary school.?
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If 2 by 9 multiply by 639
Then 9 is cut by 639 answer come 71
Then multiply 71 and 2 answer come 142
Then 9 is cut by 639 answer come 71
Then multiply 71 and 2 answer come 142
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