Kelly Company's most recent contribution format income statement is shown below:

Sales (60,000 Units) total:$600,000 per unit:$10

Variable Cost total: 360000 per unit:6

Contribution Margin total:240,000 per unit:4

Fixed Cost total:100,000

Operating Income total:140,000

prepare a new contribution format income statement under each of the following conditions (consider each case independently):

a) The number of units sold increases by 30%.