Step-by-step explanation:
There are ₉C₂ ways to choose 2 students from 9.
There are ₁₅C₂ ways to choose 2 teachers from 15.
There are ₂₄C₄ ways to choose 4 people from 24.
Therefore, the probability is:
P = ₉C₂ ₁₅C₂ / ₂₄C₄
P = 36 × 105 / 10626
P ≈ 0.356
Answer:
Yes.
Step-by-step explanation:
Every tenth is equal to ten one-hundreths/10%. So, since 0.2 is essentially a different way to write 20%, 20% of customers wanted cheese and no chili.
Answer:
60 gallons
Step-by-step explanation:
We can create a ratio for this. If we consider 2 as the 1 in the ratio, we have a ratio of 1 : 2.5. Therefore, we just need to multiply 24 by 2.5, which equals 60.
Answer:
New time to find all balls = 23.75 hours
Step-by-step explanation:
Given:
Total time = 95 hour
Total people = 1 Lillian + 3 friends = 4
Find:
New time to find all balls
Computation:
New time to find all balls = 95 / 4
New time to find all balls = 23.75 hours