Question

6 girls can draw 864 pictures in 9 hours. How many girls will be required to draw 64 pictures in 1 hour? (P.s-answer is 9)

Answer 1

let n=no. of pic by 1 girl in 1 hr
n×6×9=864
n=16
let a =no. of girls req.
16a×1=64
a=4

Answer 2

4 girls will be required to draw 64 pictures in 1 hour

Step-by-step explanation:

No. of girls required to draw 864 pictures in 9 hours = 6

No. of girls required to draw 1 pictures in 9 hours = $\frac{6}{864}$

No. of girls required to draw 1 pictures in 1 hours = $\frac{6 \times 9}{864}$

No. of girls required to draw 64 pictures in 1 hour =$\frac{6 \times 9 \times 64}{864} =4$

Hence 4 girls will be required to draw 64 pictures in 1 hour

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