A notebook costs £1.50, a pen costs 38p , a pencil costs 24p and a sharpener costs 83p. Remi buys 5 pencils, 2 pens, 2 sharpeners and some notebooks.
He pays with £9 and receives 88p change.
How many notebooks did he buy

Acollege is selling tickets for a winter fund-raiser. one day, krissa sold 14 adult tickets and 8 student tickets for a total of $376. the next day, she sold 7 adult tickets and 11 student tickets for a total of $272. krissa wanted to find the price of one adult ticket, a, and the price of one student ticket, s. she wrote and solved the following system of equations.