Answer:
20
Step-by-step explanation:
any thing multiplied by a fraction gets divided so you need to reverse it and divide to get the answer
F=60, s=60/2=30
(60-x)/(30-x)=4
60-x=120-4x
60+3x=120
3x=60
x=20
s=30-x
s=30-20
s=10
So the boy was 10 years old when his father was four times his age.
Answer:
5
Step-by-step explanation:
Answer:
there are 30 dolls in total
Step-by-step explanation:
Since 20% = 6 dolls ur gonna multiply that by 5 which gets 100% = 30
Answer:
B)2
Step-by-step explanation:
I think it is 2 but Im not percent. Hope this helps