. A parent rewards a child with 50 cents for each correctly solved mathematics problem
and fines the child 30 cents for each incorrectly solved problem. If the child nets $22.00
after 100 problems. How many problems were solved correctly?
a. 30 b. 35 c. 45 d. 53 e. 65
22. If
5 1
3
27
x

, then
x 
a. 10. b. 8 . c. 6 . d. 2 . e. 1.