1.

There are 65 students in a class. Among them, Rs 39 is distributed so that each boy gets 80 paise and each girl gets 30 paise. Find the number of boys and girls in that class.1). 40 and 252). 39 and 263). 35 and 304). 45 and 20

Answer»

Average MONEY per student = 3900/65 = 60 paise

Applying the allegation rule:

⇒ (80 - 60)/(60 - 30) = 2/3

BOYS : Girls = 3 : 2

⇒ Number of boys = (65 × 3)/(3 + 2)

⇒ Number of boys = 39

⇒ Number of girls = 65 - 39 = 26

∴ Number of boys is 39 and girls is 26


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