There are 627 boys and 212 girls in a school. Estimate the total number of students in
the school.
Answers
Answered by
0
Answer:
Let the no. of boys=7x
No. of girls=5x
7x+5x=1440
12x=1440⇒x=120
∴ No. of boys=120×7=840
No. of girls=5×120=600
Let y be the no. of girls to be added
⇒
3
4
=
600+y
840+40
⇒2400+4y=3320+120
⇒4y=3440−2400=1040
⇒y=
4
1040
=260
∴ no. of girls that needs to be added =260
Answered by
0
Answer:
840
Step-by-step explanation:
627
+ 212
______
839
hence if we round off this figure .
it would be 840
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