X=time of the third person it would take to fill the pool
We can suggest this equation:
6[(1/20) + (1/15) +(1/x)]=1
6[(3x+4x+60)/60x]=1
(7x+60)/10x=1
7x+60=10x
7x-10x=-60
-3x=-60
x=-60/-3
x=20
Answer: the third person alone would fill the pool in 20 hours .
Answer:
1 hour apart
Step-by-step explanation:
Answer:
I believe your answer is A.
Step-by-step explanation:
2x2x2
2x2=4
4x2=8
Therefore, x=2.
She spent 33 dollars on the socks and sweater, but since she found the 5 dollars she now has 28$ dollars less
Answer:
5 nickels
Step-by-step explanation:
guess and check
5 nickles and 4 pennies=9coins=29 cents
