Question

6 класс 20% от 90% числа Х равны 0,3 от 51 . Найдите число Х

Answer 1

20%=0,2.  90%=0,9.  Составим уравнение
0,9*х*0,2=0,3*51
0,18х=15,3
х=15,3:0,18
х=85

Answer 2

0.2*0.9*x=15.3
0.18x=15.3
x=1530/18
x=85

Answer 3

To solve the problem, let's break it down step by step.

Step 1: Calculate 20% of 90% of the number X. Step 2: Set it equal to 0.3 times 51. Step 3: Solve for X.

Let's proceed with the calculations:

Step 1: 20% of 90% of X = (20/100) * (90/100) * X = 0.2 * 0.9 * X = 0.18X

Step 2: 0.3 times 51 = 0.3 * 51 = 15.3

Step 3: Since we have the equation: 0.18X = 15.3

To find X, divide both sides of the equation by 0.18: X = 15.3 / 0.18 X ≈ 85

So, the value of X is approximately 85.