10.
1 answer:
You might be interested in
Answer:
G
Step-by-step explanation:
Using the rule of radicals
×
⇔
Simplifying the radicals in the expression
=
= ×
= 2
------------------
=
= ×
= 3
Then
+
= 2 + 3
= 5 → G
Answer: 9 boys remained in the choir.
Step-by-step explanation:
Let x be the number of of boys and y be the number of girls.
In a school choir, 1/2(half) of the members were girls.
i.e (1)
At the end of the year, 3 boys left the choir, and the ratio of boys to girls became 3:4.
Put y= x from (1), we get
Thus , the number of boys : x= 12
Boys remained in the choir = 12-3=9