Answer:
Jose is 10 years old now
Step-by-step explanation:
Let carl's age be c
Let Jose's age be j
Carl is 10 years older than Jose
c = j + 10.........................(1)
Five years ago, Carlos was three times as old as Jose
c - 5 = 3(j - 5).......................(2)
Substitute equation (1) into equation (2)
j + 10 - 5 = 3(j - 5)
j + 5 = 3j - 15
3j - j = 5 + 15
2j = 20
j = 20/2
j = 10
Therefore, Jose is 10 years old now