Here are two groups of numbers, A and B. Group A Group B
23 17
15 12
25 24
18 11
29 6
One number is moved from A to B.
The sum of the numbers in B is now 20 less than the sum of the numbers in A.
a) Which number is moved?
(1)
b) After the number is moved, what
is the sum of the numbers in B?
(1)
.
c) If a pen and a pencil cost £1.10 for both and the pen
costs £1 more than the pencil, what is the cost of the pen? £
(1)
Total marks: 3

The height of a birch tree, f(x), in inches, after x months is shown in the graph below. how much does the birch tree grow per month, and what will be the height of the birch tree after 10 months? a. the birch tree grows 1 inch per month. the height of the birch tree will be 16 inches after 10 months. b. the birch tree grows 2 inches per month. the height of the birch tree will be 26 inches after 10 months. c. the birch tree grows 3 inches per month. the height of the birch tree will be 36 inches after 10 months. d. the birch tree grows 2 inches per month. the height of the birch tree will be 24 inches after 10 months.