The answer is B part
As the requirement for the student is either a senior or one who studies maths or both.
So, just add the values within the two venn circles divide it by total no of values.
=> 240+40+110/240+40+110+840
=> 360/1200
Answer:11
Step-by-step explanation:
Boys : girls=7:1
Sum of ratio=7+1=8
Let them number of girls be y
Then they number of boys=y+66
Total number of pupils=y+y+66
Total number of pupils=2y+66
Number of girls=(girls ratio)/(sum of ratio) x (total number of pupils)
y=1/8 x (2y+66)
Cross multiply
y x 8=2y + 66
8y=2y + 66
Collect like terms
8y-2y=66
6y=66
Divide both sides by 6
6y/6=66/6
y=11
The number of girls is 11
Answer:
If its in exact form it would be : 9/8
If it's in decimal form it would be: 1.125
If it's in mixed number form it would be: 1 1/8
Step-by-step explanation:
Hope this helps! :))
Answer:
s=6
Step-by-step explanation:
18/s = 3
Multiply each side by s
18/s *s = 3*s
18 =3s
Divide each side by 3
18/3 =3s/3
6 =s
Answer:
Y =2
Step-by-step explanation:
6Y -2(Y + 1) = 3(Y - 2) +6
Distribute
6Y -2Y -2 = 3Y -6 +6
4Y -2 = 3Y
Subtract 4Y from each side
4Y - 4Y -2 = 3Y-4Y
-2 = -Y
Multiply each side by -1
2 = Y
