Answer:
84is 30% of what number? 280
Step-by-step explanation:
Answer: 10
p = Pamela’s age, j = Jiris’ age
2j = p
p + j = 30
Then change things around a bit...
p + j = 30 or
30 - p = j
Then substitute
2(30 - p) = p
And solve
2(30 - p) = p
60 - 2p = p
60 = 3p
p = 20
Answer:
1. y = 10 - x
Step-by-step explanation:
Because he starts off with 10 dollars, and x is the amount he spends on an item, y is showing the change that he would get from paying with a 10 dollar bill, so it's what's left over from that 10 dollars.
Answer:
48 girls
Step-by-step explanation:
Boys: Girls
7 :8
We need to get to 42 boys so we will multiply by 6
7*6 = 42
Boys: Girls
7*6 :8*6
42 48
There were 48 girls
