Serena buys 6 composition books and 6 pencils. each composition book cost $3 and the total cost is $24. which equation can you use to find the cost (p) of each pencil

1$ a pencil

Step by Step:

6 times 3 is 18

24-18=6

6 divided by 6 equals one dollar a pencil

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