Q. 1054.8( 5 Votes )

What does a duck do when it flies upside down? The answer to this riddle is hidden in the equation given below:

If i + 69 = 70, then i = ? If 8u = 6u + 8, then u = ?

If 4a = –5a + 45, then a = ? if 4q + 5 = 17, then q = ?

If –5t – 60 = – 70, then t = ? If s + 98 = 100, then s = ?

If p + 9 = 24, then p = _____?

If 3c = c + 12, then c = _____?

If 3 (k + 1) = 24, then k = _____?

For riddle answer: substitute the number for the letter it equals


Answer :

We have, i + 69 = 70


i = 70 – 69


i = 1


and 8u = 6u + 8


8u – 6u = 8


2u = 8


[dividing both side by 2]


u = 4


We have, 4a = –5a + 45


4a + 5a = 45


9a = 45


[dividing both side by 9]


a = 5


and 4q + 5 = 17


4q = 17 – 5


4q = 12


[dividing both side by 4]


q = 3


We have, –5t – 60 = –70


–5t = –70 + 60


–5t = –10


[dividing both side by –5]


t = 2


and




5p = 15 × 3


5p = 45


[dividing both side by 5]


p = 9


We have, 3c = c + 12


3c – c = 12


2c = 12



c = 6


We have, 3(k + 1) = 24


[dividing both side by 3]


k + 1 = 8


k = 8 – 1


k = 7


By substituting the number for the letter, it equals, we get



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