If Pam has 40 dollars in her account, how much money does her brother have in his account? Use a tape diagram to support your answer.

Pam and her brother both open savings accounts. each begin with a balance of $0. For every $2 is that Pam saves in her account her brother saves $5 in his account

P:bro=2:5

when P=40 what is bro?

2/5=40/b

times 5b both sides

2b=200

divide 2

b=100

bro has $100

not sure what tape diagram is