Retrieval Practice by Boxed Rockets

Q1)

Toby is a plumber.
He starts a job at 10 am and finishes the job at 12 pm For this job, Toby charges £40 for every hour it takes him to complete this job plus £50 for the materials he uses. Work out how much Toby charges for this job.

$130$

Q2) A 5 sided bias die is rolled and the probabilities are shown below. Calculate x.

\begin{matrix} 1 & 2 & 3 & 4 & 5 \\ 0.15 & 0.2 & 0.2 & x & 0.05 \end{matrix}

x = 0.4

Q3) Solve the simultaneous equations below

\begin{matrix} 3 x + y = 4 \\ 3 x - 4 y = -1 \end{matrix}

\begin{matrix} x = 1 \\ y = 1 \end{matrix}

Q4) The numbers on the spinners are added, draw a sample space diagram to show all the possible outcomes

Spinner 1

Spinner 2

+	2	3	4	5	6	7
1	3	4	5	6	7	8
3	5	6	7	8	9	10
5	7	8	9	10	11	12
7	9	10	11	12	13	14