Answer:
160 children, 112 boys and 48 girls.
Step-by-step explanation:
You can translate this into two equations:
g = 3/7 * b
g+64 = b
Then fill in one in the other and simplify:
3/7 b + 64 = b =>
4/7 b = 64
b = 64 * 7/4 = 112
g = 112 * 3/7 = 48
Last one definitely, that may not be much help though. Forgive me
Answer:
a = p/10 - (3 b)/10
Step-by-step explanation:
Solve for a:
p = 10 a + 3 b
p = 10 a + 3 b is equivalent to 10 a + 3 b = p:
10 a + 3 b = p
Subtract 3 b from both sides:
10 a = p - 3 b
Divide both sides by 10:
Answer: a = p/10 - (3 b)/10
Answer:
$8,698.50
Step-by-step explanation:
289.95x30= $8,695.50
4.3 = x - 0.8
+0.8 +0.8
5.1 = x