Out of 1200 students ina school 800 are boys and the rest are girls if 20 percent of the boys and 25 percent of the girls wear spwctacles find.the percent of the students who wear spectacles
Answers
21.666%
Step by Step explanation:
Total number of pupils = 1200
No. of boys = 800
And No. of girls = 1200 – 800
= 400
No. of boys who wear spectacles = 20 % of 800
= 20/100 × 800
= 160
No. of girls who wear spectacles = 25% of 400
= 25/100 × 400
= 100
(i) ∴ Total number of pupils who wear spectacles = 160 + 100
= 260
(ii) Percentage of pupils who wear spectacles = (260 × 100)/1200
= 260/12
= 21.666%
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Answer:
260 students
Step-by-step explanation:
Total number of students in a school = 1200
Total number of boys = 1200-800
= 400
Number of boys who wear spectacles = 20% of 800
= 20/100 × 800
= 160
number of girls who wear spectacles = 25% of 800
= 25/100 × 400
= 100
Sum of the number of boys and girls who wear spectacles = 160 + 100
= 260 (ans).