Corinne is an electrician. She charges a flat rate call-out fee of £60 in addition to an hourly rate of £18.
What is the formula for calculating the amount of money Corinne earns on a job depending on how many hours she works for?
Wages = £60 × number of hours + £18
Wages = number of hours × £18 + £60
Wages = £18 + £60
Wage = Number of hours overtime × £9 + Basic pay
What is a person’s wage when they work for 2 hours overtime and receive £65 basic pay?
£587
£148
£83
Bookmakers Ltd. use the same formula to price each printing job.
Cost = Number of books × cost per book + £1,000
What is the cost of printing 200 books when each book costs £6?
£1,200
£2,200
£6,200
The cost of hiring a speed boat is found using the formula:
Cost = number of hours × £12 + £24
For how many hours was the boat hired if the total cost is £72?
4 hours
6 hours
8 hours
If the cost to make 400 books was £3,000, what was the cost per book?
£10
£5
£7.50
What is the value of 4r - 3q when r = 7 and q = 5?
12
13
-1
What is the value of H when I = -2 and J = -7 in the formula H = 4I - 3J?
29
-29
Given that D = 3P + 2K, what is the value of P when D = 24 and K = 3?
P = 6
P = 10
P = 2
What is the value of y in the formula \({y}=\frac{{2r}-{4}}{3s}\) when r = 8 and s = 2?
y = 0
y = 2
y = 4
What is the value of r in the formula \({y}=\frac{{2r}-{4}}{3s}\) when s = 2 and y = 4?
r = 14
r = 4
r = 24