Retrieval Practice by Boxed Rockets

Q1)

Toby is a plumber.
He starts a job at 9 am and finishes the job at 1 pm For this job, Toby charges £40 for every hour it takes him to complete this job plus £45 for the materials he uses. Work out how much Toby charges for this job.

$205$

Q2) A 6 sided bias die is rolled and the probabilities are shown below. Calculate x.

\begin{matrix} 1 & 2 & 3 & 4 & 5 & 6 \\ 0.15 & 0.15 & x & 0.15 & 0.2 & 0.15 \end{matrix}

x = 0.2

Q3) Solve the simultaneous equations below

\begin{matrix} 3 x + 5 y = 71 \\ x + 5 y = 57 \end{matrix}

\begin{matrix} x = 7 \\ y = 10 \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

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