Explanation:
Hey there!
Given;
The cost of 5 pencils is £ 4.25.
Cost of 9 pencils= ?
Now;
~ Finding cost of one pencil.
Cost of 1 pencil= £4.25/5
= £0.85
~ Finding cost of 9 pencils.
Cost of 9 pencils= £9*0.85
= £7.65
Therefore, the Cost of 9 pencils is £7.65.
Hope it helps....