Please help, will reward brainliest !! (would help if someone can explain aswell)

I think b or d

Step-by-step explanation:

Sorry if it's wrong but i think it's one of those two

im not sure if i did this right but i got the answer of B if it is wrong i am so sorry :( i really hope i did not fail you

Step-by-step explanation:

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