Question

Сумма трёх чисел равняется 340.1 число 15% от суммы,2 45% от суммы. Найти третье число.

Answer 1

Первое число=340*15/100=51
второе число=340*45/100=153
третье число = 340-51-153=136

Answer 2

Let's solve this step by step. We have three unknown numbers, and we are given two percentages of the sum of these three numbers.

Let the three numbers be A, B, and C.

Step 1: Translate the given information into equations.

1. The sum of the three numbers is 340.1: A + B + C = 340.1

2. 15% of the sum is equal to the first number: 0.15 * (A + B + C) = A

3. 45% of the sum is equal to the second number: 0.45 * (A + B + C) = B

Step 2: Substitute the given information from equations 1 and 2 into equation 3.

0.45 * (A + B + C) = B

Substitute A + B + C with 340.1:

0.45 * 340.1 = B

Step 3: Solve for B.

B = 0.45 * 340.1 = 153.045

Step 4: Substitute the value of B into equation 2 to find A.

0.15 * (A + B + C) = A

0.15 * 340.1 = A

A = 51.015

Step 5: Now, find the third number C by substituting the values of A and B into equation 1.

A + B + C = 340.1

51.015 + 153.045 + C = 340.1

Step 6: Solve for C.

C = 340.1 - (51.015 + 153.045)

C = 136.04

So, the third number (C) is 136.04.