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!

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Solution

Let the number be x.

(7x + 50) + 40 = 300

7x + 90 = 300

7x = 300 − 90 (Transposing 90 to R.H.S.)

7x = 210

Dividing both sides by 7,

x = 30

Therefore, the number is 30.

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Similar questions

Q. 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.

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.

Q. Solve the following riddle:
I am a number
Tell my identity.
Take me two times over
And add a thirty six.
To reach a century
You still need four.

Solve the following riddles, you may yourself construct such riddles.

Who am I?

(i) Go round a square

Counting every corner

Thrice and no more!

Add the count to me

To get exactly thirty four!

(ii) For each day of the week

Make an upcount from me

If you make no mistake

You will get twenty three!

(iii) I am a special number

Take away from me a six!

A whole cricket team

You will still be able to fix!

(iv) Tell me who I am

I shall give a pretty clue!

You will get me back

If you take me out of twenty two!

Q. Solve the following riddle by finding the unknown number :

" A t h i r d o f m e t i m e s h a l f o f m e i s a s i x t h m o r e t h a n f o u r . F i n d m y d i v i s i o n a n d m u l t i p l i c a t i o n e q u a t i o n s t o k n o w a b o u t m e m o r e "

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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!

Let the number be x. (7x + 50) + 40 = 300 7x + 90 = 300 7x = 300 − 90 (Transposing 90 to R.H.S.) 7x = 210 Dividing both sides by 7, x = 30 Therefore, the number is 30.

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!

Let the number be x.

(7x + 50) + 40 = 300

7x + 90 = 300

7x = 300 − 90 (Transposing 90 to R.H.S.)

7x = 210

Dividing both sides by 7,

x = 30

Therefore, the number is 30.