Let's solve each question step by step:
1. Quotient of 0.135 ÷ 0.12:
To divide decimals, we can multiply both numbers by 100 to simplify our calculations:
0.135 ÷ 0.12 = (0.135 × 100) ÷ (0.12 × 100) = 13.5 ÷ 12 = 1.125
So the correct answer is 1.125.
2. Jamal's division of 7.686 by 0.18:
To find the quotient, we similarly shift the decimal points. We can multiply both numbers by 100 to simplify the division:
7.686 ÷ 0.18 = (7.686 × 100) ÷ (0.18 × 100) = 768.6 ÷ 18
Calculating 768.6 ÷ 18 = 42.7.
So Jamal should place the decimal as 42.7.
3. Jose's cost of food:
First, let's calculate the total cost of the food Jose bought:
Total Cost = Price per pound × Total pounds = $5.92 × 8.4 = $49.73.
Now to find out how much each of the four friends pays:
Cost per person = Total Cost ÷ Number of people = $49.73 ÷ 4 = $12.43.
So each of the four friends will pay $12.43.
4. Expression 18.36 ÷ 0.125:
Again, we can multiply both numbers by 1000 to simplify our calculations:
18.36 ÷ 0.125 = (18.36 × 1000) ÷ (0.125 × 1000) = 18360 ÷ 125.
Calculating 18360 ÷ 125 = 146.88.
So the expression is equivalent to 146.88.
5. Jordan's gas fill-up cost:
First, we need to determine how much gas is needed to fill up the car:
Gas needed = Total capacity - Current amount = 16.2 - 2.625 = 13.575 gallons.
Now, calculate the cost to fill this amount:
Cost = Gas needed × Price per gallon = 13.575 × 4.49 = $60.85.
Rounding to the nearest penny gives us $60.85.
So here are your answers:
- 1.125
- 42.7
- $12.43
- 146.88
- $60.85