Answer:
Pemba is 20 and her sister 15
Step-by-step explanation:
Let the sisters age be x. As pemba is five years older, her age is x+5.
Now, the sum of their ages is 135. So, by combining the two ages we get:
=>X+(x+5)=35
x+x+5=30
2x=30
x = 15
Then, substitituing this value of x into our equations for the ages of the sisters we get
sisters age 15 years old
Pemba age (15)+5=20 years old
