Problema Solution
Salvador is 116 years old. Savannah is 12 years old. How many years until Salvador's age is 5 times Savannah's age?
Answer provided by our tutors
Let 't' is the time needed untill Salvador's age is 5 times Savannah's age. This means
116 + t = 5 (12 + t)
116 + t = 5*12 + 5*t
116 + t = 60 + 5*t
116 - 60 = 5*t - t
56 = 4*t
4*t = 56
t = 56/4
t = 14 years
After 14 years Salvador's age will be 5 times Savannah's age.
Indeed after 14 years Salvador will be 116 + 14 = 130 years old and Savan will be 14 + 12 = 26 years old and 26 * 5 = 130.