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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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Mar 19, 2020
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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?
Mathematics
college
Mohit Tilwani
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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
Atomrc
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Mar 24, 2020
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Atomrc
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