The number of girls in the school is 57 less than 2 times the number of boys in the school. There are 143 girls in the school. How many boys are in the school?

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asked Mar 19, 2020 22.9k views

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Atomrc · Answer 1 · 2020-03-23T23:06:19+0000

Let x= number of boys
So 2x - 57 is the number of girls

If there are 143 girls;

2x - 57 = 143; add 57 to both sides;
2x = 200 divide by 2 to solve for x;
x = 100, the number of boys in the school

Check: does 2(100) - 57 = 143, and the answer is yes

The number of girls in the school is 57 less than 2 times the number of boys in the school. There are 143 girls in the school. How many boys are in the school?

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