+103 Cheko and Keddy collected 370 toy cars altogether. 1/4 of Cheko's toy cars was 25 more than 1/5 of Keddy's toy cars. How many more toy card did Cheko collect than Keddy?
+592 Let c = Cheko's toy cars and k = Keddy's toy cars.
c + k = 370
0.25c = 0.2k + 25
20c = -20k + 7400
25c = 20k + 2500
------------------------
45c = 9900
c = 220
c + k = 370
(220) + k = 370
k = 150
220 - 150 = 70
Cheko collected 70 more cars than Keddy.
