The cost per minute for a conference phone call originally 2.60 increased by 30% what is the new price?

a. $2.90

b. $3.20

c. $3.38

d. $3.48

c.) $3.38

Original price = $2.60

* It is the basis of increase thus, 100%

* The increase is 30%, thus, 100% + 30% = 130%

To get the new price, simply multiply the original price to 130%

$2.60 * 130% = $3.38

Another way of solving the problem is getting the equivalent of 30% and adding it to the original price.

$2.60 * 30% = $0.78

$2.60 + $0.78 = $3.38