Alice deposited $3,100.00 in a new savings account the earned 3.5 percent simple interest. 3 months later she deposited $1,150.00. 3 months after that she withdrew $2,000.00. 3 months after that the bank calculated the simple interest. What is the balance in her account?

blue marble is 15 times out of 50 = 15/50 reduces to 3/10

landing on tails is 24 out of 50 = 24/50 reduces to 12/25

to find the probability of both multiply together:

3/10 x 12/25 = 3 x 12 / 10 x 25 = 36/250

if you multiplied the numerator and denominator by 10 you get 360/2500.

the answer is 360/2500