Answer to the math problem about buying discounted items for the April 30th holiday.

Buying from both stores in sufficient quantities to qualify for the promotion will be more economical than buying from just one store.

Topic:

To celebrate the April 30th - May 1st holiday, a group of friends born in the years of the Rat, Ox, Tiger, Rabbit, Dragon, Snake, and Horse planned a picnic in Cua Lo.

Dần was assigned by Sửu to buy drinks. He went to the food store area and saw that both stores A and B were selling 1.5-liter bottles of water for 10,000 VND each.

Store A has a "Buy 5 Get 1 Free" promotion, meaning if you buy 5 bottles, you'll get 1 bottle free.

Store B, on the other hand, offers a 15% discount to customers who buy four or more bottles.

How much money does Dan need at least to buy 14 bottles of 1.5-liter water?

Prize:

If you buy all 14 bottles at store A, you need to buy 12 bottles and get 2 free, which will cost 120,000.

If you buy all 14 bottles at store B, you'll get a 15% discount and have to pay 14 x 8,500 = 119,000.

However, if we buy 5 bottles at store A, get 1 free, and buy 8 bottles at store B, the total amount to be paid will be 50,000 + 8 x 8,500 = 118,000.

It can be proven that nothing more could have been done.

The differences in this problem are actually too small to warrant such effort and complexity. However, when working with large numbers, such small details can lead to enormous savings.

According to VNE