Answer: The second answer to the question is 7.2 + 6.
Step-by-step explanation:
It would cost $16.65
$9.99 divided by 3 is 3.33 so we know one pizza costs $3.33. So now if I multiply the 5 pizzas times the cost of one I get 5 x $3.33 = $16.65
Define rates at which the individuals paint.
Bill: x = 1/8 signs/h
Bob: y = (2 signs)/(8 h) = 1/4 signs/h
Barry: z = (4/3 signs)/(8 h) = 1/6 signs/h
The job is to paint 2 signs, working together.
In the first 3 hours, the amount painted is
(x+y+z signs/h)*(3 h) = (1/8 + 1/4 + 1/6)*3 = 13/8 signs
Remaining: 2 - 13/8 = 3/8 signs
Barry quits.
In the next 1/2 hour (30 minutes), the amount painted is
(x + y signs/h)*(0.5 h) = (1/8 + 1/4)*0.5 = 3/16 signs
Remaining: 3/8 - 3/16 = 3/16 signs
Now Bob quits.
The time for Bill to finish the job is
(3/16 signs)/(1/8 signs/h) = 3/2 h
Answer: Bill finishes the job in 1.5 hours (or 1 hour, 30 minutes)
2:9 is equivalent, but i cant see the ratio table
First, convert the decimals into improper fractions. The fractions are:
31/10 and 10261/1000. To divide the fractions, change division into multiplication after flipping the numerator and the denominator of the second fraction. This comes out to be 31/10 *(times) 1000/10261.
31*1000 is 31,000 and 10*10261 is 102,610. This equals the fraction: 31,000/102,610. Simplify this.
