There are 45 students in a class. 60% of the student in the class are girls. How many boys are in the class?
18
1/2x+11=3x+12
-0.4
The difference of two numbers is 3. Their sum is 13. Find the numbers.
5 and 8
Brenda's school is selling tickets to a spring musical. On the first day of ticket sales the school sold 3 senior citizen tickets and 9 child tickets for a total of $75. The school took in $67 on the second day by selling 8 senior citizen tickets and 5 child tickets. What is the price of one senior citizen ticket?
$4
log(3x-9)=log(2x+6)
15
Find the value of two numbers if their sum is 12 and their difference is 4.
4 and 8
The senior classes at High School A and High School B planned separate trips to New York City. The senior class at High School A rented and filled 1 van and 6 buses with 372 students. High School B rented and filled 4 vans and 12 buses with 780 students. Each van and each bus carried the same number of students. How many students can a van carry?
18
16^n − 7 + 5 = 24
8.062
The sum of the digits of a certain two-digit number is 7. Reversing its digits increases the number by 9. What is the number?
34
There are 13 animals in the barn. Some are chickens and some are pigs. There are 40 legs in all. How many of each animal are there?
6 chickens and 7 pigs
log 5 6 + log 5 2x^2 = log 5 48
2, -2
126