Mathematics: 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?

The number of girls in the school is 57 less than

Ответ:

dinapearce1403

15.01.2022

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

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Ответ:

alvaradorosana05

17.07.2022

Mathematics

8 gallons= 128 cups
20 guests x 2 cups each= 40 cups will be gone
128-40= 88 cups left over
88 cups= 5.5 gallons of punch left at the end of the party.

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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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