Q1. A 9-carat gold ring is made from a mixture of metals.
The table below shows the mass of different metals in the ring.
The mass of the ring is 5.0 g

Metal Mass of metal in g
Gold 1.9
Silver 2.8
Copper 0.3
(a) Plot the data for copper from the table above on the graph below.

(2)
(b) The cost of gold is £30 per gram.
Calculate the cost of the gold used in the 9-carat gold ring.
Use the table above.


Cost of gold = £