The current price of a toy car is 68 yuan, which is 15% cheaper than the original price. How much is the current price cheaper than the original price

The current price of a toy car is 68 yuan, which is 15% cheaper than the original price. How much is the current price cheaper than the original price

68÷（1-15%）-68
=68÷85%-68
=80-68
=12 yuan

The price of seven toy cars is equal to that of five toy airplanes. It is known that the price of each toy car is 4 yuan lower than that of each toy plane?

Toy car: 5 * 4 / (7-5) = 20 / 2 = 10 yuan
Toy plane: 10 + 4 = 14 yuan

Toy car is 15 yuan cheaper than toy bus, toy car is a yuan, toy bus is 35 yuan?

a+15=35
a=20

The kindergarten bought a total of 30 two kinds of toys, one of which was 2 yuan and the other was 5 yuan. The total cost was 99 yuan. How many are the two kinds of toys

Suppose you buy the first one, 30 * 2 = 60 yuan
99-60 = 39 yuan
If you buy more than one second one, you will get a difference of 5-2 = 3 yuan
So I bought the second 39 / 3 = 13
13-30

Three kinds of toys can be bought in kindergarten for 30 yuan

Toys A: 3 △ 2 = 1.5 (yuan / piece)
Toy B: 2 △ 3 = 2 / 3 (yuan / piece)
Chicken and rabbit in the same cage
B toy: (30 × 1.5-30) / (1.5-2 / 3)
=15÷0.5
=30
Toys A: 30-30 = 0

The kindergarten bought a total of 30 two kinds of toys, one of which was 2 yuan and the other was 5 yuan. The total cost was 99 yuan. How many of these two kinds of toys are there?

Suppose there are x toys for 2 yuan, then 30-x toys for 5 yuan
So 2x + 5 (30-x) = 99
2x+150-5x=99
3x=51
x=17
30-17=13
In short, there are 17 toys for 2 yuan and 13 toys for 5 yuan

Mr. yuan bought 55 toys with 240 yuan, including 6 yuan for large size, 3 yuan for medium size, and 2 yuan for small size. How many toys are there in each?

Large a, medium B and small 55-a-b are designed
Then 6A + 3B + 2x (55-a-b) = 240
6a+3b+110-2a-2b=240
4a+b=130
Because 4A + B = 130
So a is less than or equal to 32
Because the small 55-a-b part 4A + B = 130
So a is greater than 25
A > 25 ≤ 32
Bring in a, and the answer will be
7 species in total
Do it yourself

1. 360 yuan bought 64 toys, large 10 yuan each, medium 6 yuan, small 2 yuan, the number of medium and small toys is the same, so how much did you buy large toys 2. 320 yuan to buy 50 toys, large 10 yuan each, medium 6 yuan, small 2 yuan, the number of medium and small toys is the same, so how many large toys

Let's buy x pieces for medium size and small size, and (64-2x) pieces for large size
10（64-2X)+6X+2X=360
640-20X+6X+2X=360
12X=280
It seems that the title is wrong
Let's buy x pieces for medium size and small size, and (50-2x) pieces for large size
10（50-2X)+6X+2X=320
500-20X+6X+2X=320
12X=180
x=15
50-2x=20
I bought 20 for the large size

A shop bought a batch of toys at the price of 1 yuan for 2 toys, and then sold all these toys at the price of 2 yuan and 3 toys. As a result, a total profit of 60 yuan was made, How many toys are there in this batch?

Each purchase price: 1 ÷ 2 = 0.5 yuan
Each price: 2 ÷ 3 = 2 / 3 yuan
Each profit: 2 / 3-0.5 = 1 / 6 yuan
How many toys are there in this batch: 60 △ 1 / 6 = 360

1 jin 3 yuan, bought 2 yuan, how many grams altogether? ==This is a question my mother asked me? ··········································································································································

1 jin = 500 g
1 jin 3 yuan → 500 grams 3 yuan → 166.67 grams 1 yuan
Therefore, 2 yuan: 166.67 × 3 ≈ 333.34g
That is 333.34g, 2 yuan