380 mangoes are distributed among some boys and girls who are 85 in numbers. Each boy gets four mangoes and each girl gets five. The number of boys is ,
A-15 B-38
C-40 D-45
Answer:
Very easy trick no long process.
There are 380 mangoes,
Let us consider each boys and each girls gets 4 mangoes.
According to questions the total no. Of boys and girls are 85.
If each gets 4 mangoes then,
85 numbers of children gets mangoes,
=> 85 × 4 = 340 mangoes.
We have 380 mangoes.
So now 380 - 340 = 40 mangoes are extra.
According to questions each girls gets 5 mangoes but each boys 4.
Each girls got 4 mangoes now get 1 mangoes .
We have 40 mangoes so then numbers of girls is 40.
And the numbers of boys = 85 - 40 = 45.
Alternate
Suppose all boys and girls get 5 mangoes each ,
Then 85 children get mangoes,
85 × 5 =425 mangoes.
We have 380 mangoes,
=> 425 - 380 = 45
Hence, we need 45 mangoes,
So number of boys 45
Correct-(D) 45
Shortcut
85×5=425
=>425-380=45(Answer)
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