Traditional Culture Encyclopedia - Hotel accommodation - Yichang Telecom Business Hall has launched two packages. The first package is a monthly fee of 15 yuan. Calls charge 0.15 per minute.
Yichang Telecom Business Hall has launched two packages. The first package is a monthly fee of 15 yuan. Calls charge 0.15 per minute.
There are three situations.
Assuming X minutes of calls per month, A will spend 15+0.15x yuan and B will spend 5+0.2x yuan.
When 15+0.15x>5+0.2x, x<200
When 15+0.15x=5+0.2x, x=200
When 15+ When 0.15x<5+0.2x, x>200.
In summary, if the call time is less than 200 minutes, it is more economical to choose card B; if the call time is equal to 200 minutes, it is the same for A and B cards Save money; if the call time is more than 200 minutes, choose A card to save money.
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