42 oranges are distributed among some boys and girls. If each boy gets 3, then each girl gets 6. But if each boy gets 3, it needs 6 more. The number of girls is
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Answer: 42 oranges are distributed among some boys and girls. If each boy gets 3 then each girl gets 6. But if each boy gets 6 and each girl gets 3, it needs 6 more ( correction in Question)
To find : Number of girls is
Solution:
Let say Girls = G
& Boys = B
=> 3B + 6G = 42
=> B + 2G = 14 Eq1
6B + 3G = 42 + 6
=> 6B +3G = 48
=> 2B + G = 16 Eq2
Eq1 + Eq2
3B + 3G = 30
=> B + G = 10
B + 2G = 14
=> 2G - G = 14 - 10
=> G = 4
number of girls is 4
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