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:
okk
Step-by-step explanation:
Answer:
1200
Step-by-step explanation:
it's just 400x3 which is 1200
Answer:
you don't because its not relivant
Step-by-step explanation:
Answer:
it should be (5,4)
Step-by-step explanation:
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