On Children's Day, Mrs. Lin bought costumes for the performances for the children. The money for 4 T-shirts and 5 shorts was the same. 20 yuan per shorts, how much is each T-shirt?
六一儿童节，林老师为小朋友购买演出用的服装，买4件T恤和5件短裤的钱同样多．每件短裤20元，每件T恤多少元？
<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">20 * (5/4)</gadget>
<output>25</output>

<result>25</result>