Ek club me ladke or ladkiyo ka ratio 7:4 hai.yadi ladko ki tulna me 21 ladkiya kam hai to kul bache kitne hai
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Answer:
77
Explanation:
7x-4x =21
3x =21
x =21/3
x = 7
total boys 7x= 7*7=49
total girls. 4x= 4*7=28
total number of children in club = 49+28=77
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