Answer:
15 boys and 25 girls
Step-by-step explanation:
The sum of boys (b) and girls (g) is given as 40:
g + b = 40
The number of girls is 2 times the number of boys minus 5:
2b - 5 = g
First formula can be rewritten as g = 40 - b
Then you can substitute this for g in the second, and you get:
2b-5 = 40-b
Which simplifies to:
2b + b = 40 + 5
3b = 45
b = 15
g = 40-15 = 25
15 boys, 25 girls.
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Answer:
1
Step-by-step explanation:
<em>⇒2/3 ÷ (-4) - [ 1/6 - 8/6]</em>
<em>⇒2/3 / (-4) - [- 7/6]</em>
<em>⇒-1/6 + 7/6</em>
<em>⇒6/6</em>
<em>⇒1</em>
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