Moore's family compared mobile phone plans to get the best deal

Moore's family compared mobile phone plans to get the best deal. At T-Mobile, the family plan costs $50 per month for the first two lines and $16 for each additional line. At M-Mobile, the family plan costs $45 for the first two lines and $14 for each additional line. Moore's family needs to purchase 5 cell phone lines. How much cheaper is the M-Mobile than T-Mobile?

GSM8K — Grade School Math 8K (Cobbe et al., OpenAI, 2021) · train #6411