James bought 2 cokes and 2 pizzas for the cost of \(₹\)100. Peter bought 1 coke and 3 pizzas for the cost of \(₹\)120 at the same shop. Calculate the individual cost of coke and pizza by graphical method.
 
The cost of coke \(=\)  \(cm\)
 
The cost of pizza \(=\)  \(cm\)