A school’s annual budget for the purchase of student computers increased by 38% this year over last year. If the price of student computers increased by 20% this year, then the number of computers it can purchase this year is what percent greater than the number of computers it purchased last year?
Pick one.
A) 10%  B) 20%  C) 15%  D) 18%  E) 16%
Lats year: budget = $100, price = $1 --&gt; the number of computers purchased = 100/1= 
<gadget id="calculator">100/1</gadget>
<output>100</output>
100;   This year: budget= $138, price = $1.2 --&gt; the number of computers purchased = 138/1.2= 
<gadget id="calculator">138/1.2</gadget>
<output>115</output>
115.   Increase in the number of computers purchased= 15%.   Answer: 15%.
<result>C</result>
A school’s annual budget for the purchase of student computers increased by 38% this year over last year. If the price of student computers increased by 20% this year, then the number of computers it can purchase this year is what percent greater than the number of computers it purchased last year?