Answer:
boys = 250
girls = 150
Step-by-step explanation:
5g = 3b eq. 1
g + b = 400 eq. 2
g = girls
b = boys
From the eq. 2
g = 400 - b
Replacing this last eq. on eq. 1:
5(400-b) = 3b
5*400 + 5*-b = 3b
2000 - 5b = 3b
2000 = 3b + 5b
2000 = 8b
2000/8 = b
250 = b
From eq. 2
g + 250 = 400
g = 400 - 250
g = 150
Check:
from eq. 1
5*150 = 3*250 = 750
That would be the commutative property
Answer:
30
Step-by-step explanation:
3/5 = he has 5 at the end.
gave 2/3 to son which means 15 out of 10 to son.
gave half to daughter which is 15/30, so he ends up with 2 and the least amount he can start with is 30.
500-360+350-490 answer is 490
Answer:
The mean is ^6
Step-by-step explanation: To figure out the mean, add up the numbers, 7+3+5+2+9+10=36 then divide it by how many numbers you have 36/6=6
