The school bought 12 sets of dance clothes, 336 yuan. 4 yuan is a discount for each uniform. How much did it cost?

336÷ 12=28 (yuan)-Calculate that 12 sets of uniforms cost 336 yuan, and how much is a set of uniforms.

28+4=32 (yuan) -28 yuan is the discounted school unit price, and 4 yuan is cheaper than 4 yuan, that is, the unit price of school uniforms before the discount is more expensive than that after the discount by 4 yuan, so the discounted unit price is added to 4 yuan.

You can also use the hypothetical method:

Suppose the school buys uniforms before the discount.

12×4=48 (yuan)-A uniform before discount is more expensive than that after discount. 4 yuan, there are 12 sets here, which means 12 4 yuan, which is simply 12×4.

336+48=384 (RMB)-The uniform before full discount is more expensive than the uniform after full discount, so the extra 48 yuan will be added to the total price of 336 RMB after full discount.

384÷ 12=32 (yuan)-The total price of school uniforms before discount is divided by 12 sets, which is how much is a set.

A: It turns out that each uniform costs 32 yuan money.

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