a) 2:1
b) 1:2
2/3 are girls so 1/3 are boys
Answer:
c
Step-by-step explanation:
I just had the exact same question on a worksheet
(x1 + x2 ÷ 2), (y1 + y2 ÷ 2)
40 grams
y * 25% + x * 10% = 120 * 15%
x = 120 - y
(120-y) * 10% = x * 10%
y * 25% + (120 - y ) * 10% = 120 * 15%
0.25y + 12 - 0.1y = 18
0.15y = 6
y = 6 / 0.15
y = 40
14
hope this helped
