Question

Solve the following riddle:-
I am a number, tell my identity!
Take me seven times over, and add a fifty
To reach a triple century, you still need forty!!​

Answer 1

Answer:

Let the required number be x.

According to the given data, it seems to be a linear equation in x

Seven times the number gives 7x

Adding a fifty to that number gives 7x + 50 ____ (1)

To reach a triple century means the above equation needs to be equated to 300

Still forty is required for it to be equated to 300

7x + 50 = 300 – 40

7x +50 + 40 = 300

7x + 90 = 300

7x = 300 – 90 = 210

7x = 210

x = \bold{\frac{210}{7}}

7

210

= 30

Step-by-step explanation:

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Answer 2

30

Let the number be x

= 7x + 50 + 40 = 300

= 7x + 90 = 300

= 7x = 300 - 90

= 7x = 210

= x = 210/7

= x = 30

$\huge\mathfrak\red{thanks}$