Bob is the fourth child, as the sentence states "Bobs FATHER"
Answer:
B = R - M
Step-by-step explanation:
1. R = M + B Subtract M
2. R - M = B
Answer:
52 minutes
Step-by-step explanation:
it takes him 13 minutes to complete 5 so if he wants to do 20 problems do 20 divided by 5 (4) then do 13 times 4=52
