There is a total of 270 men, women and children on a train.
1 answer:
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Answer:
So the number of total combinations is 35.
Step-by-step explanation:
We know that Ellen must take 4 courses this semester. She has a list of 3 math courses and 4 science courses.
Therefore, she have total 7 courses.
So, we calculate the number of combinations to choose 4 out of 7 courses.
We get:
So the number of total combinations is 35.
Answer:
Number of games won = 110
Step-by-step explanation:
Given:
Total games played = 154
The ratio of number of games won to number of games lost =
Solution:
Let the number of games won be =
Thus, number of games lost =
The total games played can be given as =
Thus, we have:
Dividing both sides by 7.
∴
So, number of games won =