Answer:
7m
Step-by-step explanation:
P=a+b+c+d
31=6+8+10+d
31=24+d
31-24=d
7=d
It would take 20 hours since 8,000 times 5 is 40,000 so 4 times 5 is 20.
Logic.
the sales tax is close to 217.94
1/10 = 0.1
0.9 x 0.1 = 0.09
0.09 is your answer
hope this helps
