Required Mathematical Intelligence

Chapter 145 Red and Blue Pencils

Each red pencil is 0.19 yuan, and each blue pencil is 0.11 yuan. I bought 16 of the two kinds of pencils and spent 2.80 yuan. How many red pencils and blue pencils did you buy?

[答案：假设都买蓝铅笔，0.11乘以16等于1.76元，2.8-1.76=1.04元，少花了1.04元，每只笔少花0.19-0.11=0.08元，1.04除以0.08等于13支，13支就是没买的红铅笔，红铅笔13，蓝铅笔3支。]
(End of this chapter)