Question

The number of boys in a class is 3 more than twice the number of girls. If the number of boys is 31, find the number of girls.​

Answer 1

REQUIRED STEP BY STEP SOLUTION:-

Let the number of girls be x.

Let the number of boys be y.

Thus, given that, the number of boys=y=3+2×Number of girls=31.

Thus, y= 3+2×x=31

$3 + 2x = 31$

$2x = 31 - 3 = 28$

$x = \frac{28}{2}$

$x = 14$

Hence, the number of girls=x=14.

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