Rob is twice Joshua’s age. Nick is 5 years older than Joshua.

The sum of all their ages is 45.
How old is Nick?

Joshua - 10

Rob - 20
Nick - 15

i love maths and brian

To determine Nick's age, let's break down the information given:

1. Rob is twice Joshua's age: Let's call Joshua's age J. Rob's age is then 2J.

2. Nick is 5 years older than Joshua: Nick's age would be J + 5.

3. The sum of all their ages is 45: The equation based on all the information is J + 2J + (J + 5) = 45.

To solve this equation, we need to combine like terms:
J + 2J + J + 5 = 45
4J + 5 = 45

Now, we can isolate the variable J by subtracting 5 from both sides of the equation:
4J = 45 - 5
4J = 40

Finally, dividing both sides of the equation by 4 will give the value of J:
J = 40 / 4
J = 10

Now we can determine Nick's age by substituting J back into the equation:
Nick's age = J + 5
Nick's age = 10 + 5
Nick's age = 15

Therefore, Nick is 15 years old.

R=2*J

N-5=J
R+J+N=45
2J+J+J+5=45
4J=40
J=???

5678

nein