Question

subtracting 40% of a number from the number , we get the result as 30. The number is:

Answer 1

Heya ✋

Let see your answer !!!

Let the required number be x. Then,

according to question ,

x - 40 % of x = 30

=> x - 40/100 × x = 30

=> x - 2x/5 = 30

=> 5x - 2x/5 = 30

=> 3x/5 = 30

=> 3x = 30 × 5

=> 3x = 150

=> x = 150/3

=> x = 50

Hence , the required number is 50.







Thanks :))))

Answer 2

Answer:

50

Step-by-step explanation:

Given:

When we take a number and deduct 40% from it, the result is 30.

To find:

The number

Solution:

When a question like the one above is presented to us, we solve it by treating each element whose value needs to be calculated as an unknown variable. The conditions listed in the query are then changed to include the unknown variable. The conditions are then resolved using a variety of methods, including the quadratic method, the quadratic substitution method, and the elimination method. The two numbers' ratio must be determined. Utilizing the idea of solving equations, we resolve this. The two numbers are first treated as two separate variables, and the values of the variables are then placed in the conditions specified in the question to determine the ratio of the two numbers.

Let the number be x

x-40%x=30

$x-\frac{40}{100}x=30\\ \frac{60}{100}x=30 \\x=\frac{30\times 100}{60}\\ x=50$

Hence the correct answer is x=50.

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