Super easy math problems Send points and add points, and I can t lose you

Let Wang Gang's age be x, and Wang Gang's mother's age be 6x

x+10)/(6x+10)=1/2

The solution is x=, 6x=15

So now Wang Gang and her mother are now 12 and a half years old and 25 years old, respectively.

Ten years ago, Wang Gang was x years old, then his mother was 6x

So 2(x+20)=6x+20

x=5 So now Wang Gang is 5+10=15 years old.

His mother is 6 * 5 + 10 = 40 years old.

Wang Gang age x, mother y

6（x－10）＝y-10

2(x+10)=y+10

Solve the system of equations x=15 y=40

Let's Wang Gang and her mother are now x and y in age, respectively

y-10=2(x-10)

y+10=2(x+10)

Get x=15

y=40

Let's Wang Gang and her mother are now x and y in age, respectively

y-10=2(x-10)

y+10=2(x+10)

Solved by the system of equations x=15

y=40

Solution: Let's say Wang Gang is x years old this year, and my mother is y years old this year.

6(x-10)=y-10

2(x+10)=y+10

Solution: x=15, y=40

A: Wang Gang is 15 years old this year, and his mother is 40 years old this year.

I can't figure out if you're typing it wrong.

, 201 500, the number B is 20% less than the number A

The ratio of the numbers A and B is 4:5, and the number A is less than the number B (

20), the number B is more than the number A (

Reduced, because the reduction is 10% after the price increase, so it is more than the original reduction (1+10%) (1-10%) =, and the final ** is the original 99%.

1.A number consists of 4 tenths and 2 thousandths, and this number is written as a decimal () and written as a fraction is (

201 500, written as a percentage is (

2.The number A is 25 more than the number B, and the number B is less than the number A (20) 3The ratio of the numbers A and B is 4:5, the number of A is less than the number of B (20), and the number of B is more than the number of A (

4.After the price of a commodity is raised by 10 and then reduced by 10, the ** of this commodity has increased or decreased? Why?

The ** of this commodity is reduced.

Let the original price be x after the price increase is 10%, it will become.

The price is reduced by 10% and becomes.

So lowered.