Awireless store owner takes presale orders for a new smartphone and tablet. he gets 320 preorders for the smartphone and 310 orders for the tablet. the combined sale of the preorders is $ 322,000. if the price of a smartphone and a tablet together is $ 1,020, find the cost of one smartphone and the cost of one tablet.

y = $440

x = $ 580

Explanation:

Given data:

order for smartphone is 320

order doe tablet is 310

sale of all order is $322,000

total combined price for smartphone and tablet is $1020

let cost of one smartphone is x

let cost of one tablet is y

320 x +310 y = 322,000 1

x + y = 1020 2

solving 1 and 2 we get

y = $440

x = $ 580

i'ts proportional. if the inflation rate is 12% for example, the cpi will be 12% less.

hope it ,

bioteacher101