asanji’s printing inc. has two types of printing presses: model a and model b. model a can print 80 books per day and model b can print 60 pages per day. altogether asanji has 18 printing presses. if he can print 1260 books in a day, then how many of each press does he have?

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.