Question

John has twice as many brothers as Bob. If Bob has b brothers, how many brothers does John have?

Answer 1

2x. Use variables. "X" is our variable. Bob has x brothers. If john has 2 times as many you multiply so it would equal 2x

Answer 2

Let, J = John and B = Bob

2J = B

Because you didn't give me a number we are making an expression

2J = b

Make J = 1

J = b/2