Mandy has to pay for her gas when she goes out with friends. She receives an allowance of $25 per week. Mandy fills her 16 gallon car up twice a month with gas currently costing $2.11 per gallon. After filling her car up twice a month, how much does Mandy have left over to spend on activities with her friends?
Write an equatin that satisifies this
y=(25-4)-2.11(16 x 2)
How much money will she have left at the end of the month after filling her car's gas tank? (assuming the month had 4 weeks)
$32.48
cost of 1 fillup = 16(2.11) = $33.76
monthly cost = 2(33.76) = $67.52
monthly allowance = 4(25) = $100
left over = 100 - 67.52
= $32.48
your answer is right
To calculate how much money Mandy has left over to spend on activities with her friends after filling her car up twice a month, we can use the equation:
Money left = Allowance - (Gas cost per gallon x Gallons filled)
Given:
- Mandy's allowance per week = $25
- Mandy fills her car up twice a month
- Gas costs $2.11 per gallon
- Mandy's car has a 16-gallon tank
First, let's calculate the cost of filling Mandy's car up once:
Cost of filling up once = Gas cost per gallon x Gallons filled
= $2.11/gallon x 16 gallons
= $33.76
Since Mandy fills her car up twice a month, the total cost of filling her car up in a month is:
Total cost of filling up in a month = Cost of filling up once x Frequency of filling up
= $33.76 x 2
= $67.52
Now, to calculate the amount of money Mandy has left at the end of the month after filling her car's gas tank, we need to subtract the total gas cost from her monthly allowance:
Money left = Allowance - Total cost of filling up in a month
= $25 - $67.52
= -$42.52
Since the result is a negative amount, it means Mandy has a deficit of $42.52 at the end of the month after paying for her gas. This means she needs an additional $42.52 to cover her gas expenses.
Please note that the calculation assumes Mandy's allowance doesn't change during the month and that she only spends money on gas and no other expenses are considered.