Answer:
1/5 is the probability
Step-by-step explanation:
total = 20% +80% =100%
seniors who speak both/ total
20% / 100%
20 / 100
= 1/5
Answer:
The cost for all of the students is $391
Step-by-step explanation:
Since it costs $17 for each student and there are 23 students, you multiply 17 and 23 to get the cost for all students.
First you want a common denominator: 15/12 - 9/12. Simplify: 6/12 which is 1/2.
You started with $15. 15-15 = 0 and then you earned $30, but spent $12... 30-12= 18