How many of each kind of stamp does he have?

Question

mr akika has 49 23 cent and 29 cent stamps all told. the stamps are worth $13.07. how many of each kind of stamp does he have?

Answer 1

x+y = 49

23x + 29y = 1307

23x + 23y = 23(49) = 1127

6y = 180

y = 30 29 cent stamps

x = 19 23 cent stamps

23(19) + 30(29) = 437 + 870 = 1307