The cost of one food packet is ₹ 45 with a fixed delivery charge of ₹10 . The total cost for y number of food packets is given by :
a) 45 + 10y
b) 45 + 10 + y
c) 45y + 10
d) 45 - 10y
c)
Cost of y food packets=cost of 1 food packet × number of food packets
=> Cost of y food packets=45×y
=> Cost of y food packets=45y
Total cost = cost for y food packets + fixed charge
=> Total cost = 45y + 10