If you wanted to go to the gym for only 4 months basic gym would be cheaper but if you wanted to go for a whole year then you’d spend less money at the holiday gym
Hope thia helped can you mark me brainliest please
Answer:
sister = 6 years
John=18 years
Step-by-step explanation:
A(S) + 12 = 3 * A(S), subtracting A(S) from both sides one gets 12 = 2 * A(S). Now dividing both sides by 2 we get A(S) = 12/2 = 6 . Therefore, the age of the sister is 6 years when her brother John is three times as old, that is 18 years.
