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The ratio of boys to girls in a school is 1:4

The numbers of girls who wear glasses and the girls who don't are in the ratio 1:2

Calculate the number of girls who don't wear glasses, if there are 300 students altogether in this school

 Nov 23, 2020

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 #1
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300 students in the school.

 

1/[1+4]  x  300 =60 boys in the school

300  -  60 =240 girls in the school

 

1/[1+2]  x  240 =80 girls who wear glasses

240  -  80 = 160 girls who don't wear glasses.

 Nov 23, 2020
 #1
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Best Answer

300 students in the school.

 

1/[1+4]  x  300 =60 boys in the school

300  -  60 =240 girls in the school

 

1/[1+2]  x  240 =80 girls who wear glasses

240  -  80 = 160 girls who don't wear glasses.

Guest Nov 23, 2020

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