Retrieval Practice by Boxed Rockets

Q1)

Toby is a plumber.
He starts a job at 9 am and finishes the job at 11 am For this job, Toby charges £20 for every hour it takes him to complete this job plus £65 for the materials he uses. Work out how much Toby charges for this job.

$105$

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

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

x = 0.2

Q3) Solve the simultaneous equations below

\begin{matrix} 3 x + 3 y = 24 \\ 2 x + 3 y = 17 \end{matrix}

\begin{matrix} x = 7 \\ 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	4	6	8
2	4	6	8	10
4	6	8	10	12
6	8	10	12	14
8	10	12	14	16
10	12	14	16	18