Suppose you have $20 in your bank account and you start savings $5 each week and your friend has $5 in his bank account and is savings $10 each week. After how many weeks will you and you friend have the same amount of money in your accounts

Idon't want to fail summer school. the probabilities of contamination in medicine capsules due to the presence of heavy metals and different types of microbes are given in the table. the probability of capsule b having microbial contamination is (the same as, greater than, less than) the probability of capsule d having it.