Answer:
A
Step-by-step explanation:
3(x-2)
Replace x as 12
3(12-2)
3(10)
3 times 10
30
Assuming that their exam success is independent then
P(both fail) = 1/4 x 2/5 = 2/20 or 1/10
Step-by-step explanation:
5/10+2/10
7/10
0.7
................
1 dozen = 12
144 / 12 = 12 dozen
12 dozen/ 3 = 4
They need 4 times the amount of flour:
3 1/4 x 4 = 13
They need 13 cups of flour
