Answer:
Explanation:
Let x represent the number of adult dinosaurs. Then 3x is the number of babies. The total number of paintings is ...
15(3x) +7(x) = 208
52x = 208 . . . . . . . . . simplify
x = 4 . . . . . . . . . . . divide by 52
3x = 4·3 = 12
There were 12 baby dinosaurs and 4 adult dinosaurs.