# 5) Answer the following questions : The total number of boys and girls in a school is 320. the number of boys in this school is 18

Question

5) Answer the following questions :
The total number of boys and girls in a school is 320. the
number of boys in this school is 180 find :
a) The ratio between the number of boys and that of girls.
b) The ratio between the number of boys & the total number of
pupils.
c)The ratio between the number of girls & the total number of
pupils.

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2 years 2021-07-31T12:30:38+00:00 2 Answers 8 views 0

a)9:7 b) 9:16 c) 7:16

Step-by-step explanation:

the no of girls (320-180)=140

a) ratio of no of boys and girls=180/140=9/7=9:7

b)ratio of boys and total pupil=180/320=9/16=9:16

c) ratio of the girls and pupils=140/320=7/16=7:16

a) 9:7 (9 being the boys,7 being the girls)

b)9:16 (9 being boys, 16 being the total pupils)

c)7:16 (7 being girls, 16 being the total pupils)

Step-by-step explanation:

a) No. of girls= 320-180

=140

Boys: Girls

180 : 140 [ ÷ 20]

9 : 7

b) Boys: Pupils

180 : 320 [ ÷ 20]

9 : 16

c). Girls: Pupils

140 : 320 [ ÷ 20]

7 : 16