Problema Solution
The bus fare is 2.00. Purchasing a coupon book would be 21.00 and the fare would be reduced to $1.00. How many time a month must the bus be used so that the total monthly cost without the coupon book would be the same as with the coupon book.
Answer provided by our tutors
Let 'x' represent the number of times per month that the bus is used.
2x = 21 + 1*x
2x = 21 + x
2x - x = 21
x = 21 times
The bus must be used 21 times so that the total monthly cost without the coupon book would be the same as with the coupon book.