Dalia's family bought 5 adult tickets and 2 student tickets to the school play for $65. Shay's family bought 3 adult tickets and 6 student tickets for $69. How much does each type of ticket cost?

Lets say a is adult tickets and s is student tickets. for dalias family its:

5a + 2s = 65

for shay

3a + 6s = 69

-15a -6s = -195

-15a = -195

Step-by-step explanation:

25% of the 40 students is 10 students.
first you have to turn 25% into a decimal with is .25. now you have to multiply the number of student with the decimal. 40 x .25 = 10.00 (10 students)

so every 25% is to 10 students.
2o students in percentage is equal to 50% with is 1/2 factional part of the grup.