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Number of boys number of girls 11:9 there is 124 more boys than girls work out the number of students at the school

User Geovanna
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1 Answer

9 votes
9 votes

Answer:

1240

Explanation:

Number of boys to a girl is

x:y= 11:9

9x= 11y

There are 124 more boys in the schooll than girls

x= 124+y

Substitute 124+y for x

9(124+y)= 11y

1116+9y= 11y

1116= 11y-9y

1116= 2y

y= 1116/2

y= 558

Number of girls is 558

The number of boys can be calculated as follows

= 558+124

= 682

Hence the total number of students is

= 682+558

= 1240

User Sheepgobeep
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