A school library has newly purchased 45 story books and 45 science and technology books, each story book is 9.8 yuan, and each science and technology book is 14.2 yuan. How much did it cost?
How much did it cost to get a * * *?
Solution:
9.8ⅹ45+ 14.2ⅹ45
=(9.8+ 14.2)ⅹ45
=24ⅹ45
= 1080 (yuan)
A: A * * * cost 1080 yuan.