The answer is 7x = 6(x + 15)
x - Jim's rate
y - Pete's rate
<span>Jim completed half the floor in 7 hours: 7x = half of the floor
</span><span>Pete completed the other half of the floor in 6 hours: 6y = half of the floor
So: 7x = 6y
</span><span>Pete can lay 15 more tiles per hour than Jim: y = x + 15
</span>7x = 6y
y = x + 15
Substitute the second equation into the first one:
7x = 6(x + 15)
Answer:
No mabey c
Step-by-step explanation:
Answer:
9c because you don't know how much money Kelly actually spent so instead of doing 9 x the price of each box, you replace it with c, so it's 9c
Step-by-step explanation:
Answer:
10%
Step-by-step explanation:
We have procent:
520 —-> 100%
572 ——> x%
So, it is:
520*x=572*100
X=57200/520=110%
110%-100%=10%
Answer:
532m^2
Step-by-step explanation:
Please see the attached pictures for full solution.