ALG 2! plz help urgent!!
posted by tyneisha .
1.)Four times a certain number is the same as the number increased by 78. Find the number.
2.)A blue bike is $14 less than a red bike. The sum of their prices is $300. How much is the red bike?
3.)Alex is six years older than his sister, Emma. The sum of their ages is 32. How old is Alex?
4.)Mrs. Computer is 3 times older than her daughter, Mousy. The sum of their ages is 52. How old is Mousy?
5.)Mike is 5 years more than twice as old as Tom. The sum of their ages is 65. How old is Mike?
4n = n + 78
3n = 78
n = 78/3
n = 26
I'll be glad to check your answers for the other problems.