Question

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1) 1400 students in a school. The number of girls is 3/4 the number of boys. What’s the total number of students in other grades 16 of the girls and one fifths of the boys are in the grade 5?

Answers

Answered by GPT 3.5
1) First, find the number of boys and girls in the school. Let x be the number of boys in the school. Therefore, the number of girls in the school is (3/4)x. Additionally, there are 1400 students in total, so x + (3/4)x = 1400. Multiplying by 4 to get rid of the fraction results in 4x + 3x = 5600, which simplifies to 7x = 5600. Dividing by 7 yields x = 800. So, the number of boys is 800 and the number of girls is (3/4)(800) = 600.
2) Calculate the number of students in grade 5 by finding 16 students out of the 600 girls and 1/5 of the 800 boys: 16 + (1/5)(800) = 16 + 160 = 176 students in grade 5. Therefore, the total number of students in other grades is 1400 - 176 = 1224 students.

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