Answer:
15
Step-by-step explanation:
a) (0.17 ac)×(126 min/ac) = 21.42 min
b) I can mow 1/126 ac/min; you can mow 1/117 ac/min. Together, we can mow at a rate that is the sum of these:
... (1/126 + 1/117) ac/min = (117 + 126)/(126×117) = 243/14,742 ac/min
Then it will take 14,742/243 min/ac × 0.17 ac/lawn ≈ 10.31 min/lawn
Solving
we get 
Step-by-step explanation:
We need to solve the problem: 
Solving:

Add 9/4 on both sides:


So, Solving
we get 
Keywords: Solving Fractions
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Answer:
Can you post a clearer picture <3 ?
Step-by-step explanation: