Math Fun Fun Question 15, Fun Math Questions

I have also thought about this question.

In fact, the will is a bug, 1 2 + 1 4 + 1 6 = 11 12, not 1, so this must be inexhaustible. So the 1 2, 1 4, 1 6 represents the proportion, and if you don't add 1 horse, you can do it like this: 1 2:

2。So get 6 11, 3 11, 2 11, that is, 6, 3, 2 horses.

So it can't be made sense. Obviously, the least common multiple of the denominator in several fractions is 12, and there are three fractions that add up to 11 12

Add a horse first to make it a multiple of 2,4,6 12 points to 6,3,2 and naturally 1 left.

Set up a wood-splitting stool for a day worth x rubles.

** = 10x-20 for the book

At the same time the ** = 7x-5 of the book

So 10x-20=7x-5, and the calendar cavity gets x=5

So the ** of the book is 10 5-20 = 30 rubles.

Hope it helps, thank you.

Hello. Let the ** of this book be x rubles.

For the daily reward is the same as that of the brothers.

So. x+20)/10=(x+5)/7

Solution x=30

So guess the book is 30 rubles.

Let us run x meters, x 100 = 1000 (60 + 40), and solve, x = 1000 meters.

Help me...

Hello 100 stars:

Solution: Let the two meet each other after X minutes.

60＋40）×x＝1000

100x＝1000

x 10 dogs ran away:

10 100 1000 (m) 1 (blind age to Garrowfinch Meter).

Solution: Let's say A and B meet after walking for x minutes, according to the question.

60+40）x=1000

100x=1000

x = 10 The time it takes for A and B to meet, and the lack of filial piety is the time for the dog to run, and the dog runs for 10 minutes.

100 10 1000 (m).

1000 m = 1 km.

A: The dog ran a total of 1 km.

Number of people: [16*(1 2)+4] (9-7)=6 people.

Silver taels: 6 * 7 + 4 = 46 taels = 2 catties and 10 taels.

7*n+4=a

9*n-8=a

where n is the number of people, a is the total number of money, simultaneous equations, the number of people is 6, the number of money is 46, it's not wrong, it's so simple!

For the one who bought shoes, Master Wang was determined to lose 40 + 65 = 105 yuan, for the neighbors, the account was calculated like this, in exchange for the 100 yuan, 65 were directly given to the one who bought shoes, and he had already calculated that he had 35 yuan of real money left, and at this time he had to make up another 65 yuan of real money to make up enough 100 yuan to give his neighbor, and he lost 65 yuan, a total of 40 + 65 + 65 = 170 yuan.