Buy a hotel with the same paragraph

Buy 1 box +5 groups of 3 boxes 10 yuan.

The hotel needs to buy 35 boxes of the same facial tissues. In order to save money, you can choose to buy 1 whole box (20 boxes) and add 5 groups (*** 15 packs), each with 3 packs, at the price of 10 yuan. The total cost is 60+10 * 5 =110 yuan. According to the calculation, the average price of each box under this scheme is about 3. 14 yuan, which is more cost-effective and economical than shopping alone or buying in bulk by other means.