For a basic monthly fee of F yen (¥F), Naoko’s first cell phone plan allowed him to use a maximum of 420 minutes on calls during the month. Then, for each of x additional minutes he used on calls, he was charged ¥M, making his total charge for the month ¥T, where T = F + xM. What is the value of F ? 1. Naoko used 450 minutes on calls the first month and the total charge for the month was¥13,755.2. Naoko used 400 minutes on calls the second month and the total charge for the month was ¥13,125.
Three children inherited a total of X dollars. If the oldest child inherited $7,000 more than the youngest child, and the youngest child inherited $9,000 less than the middle child, what is the value of X ?1. The middle child inherited $27,000.2. The youngest child and the middle child together inherited a total of $45,000.