Q. A number when increased by 11% becomes 777. The number is :
(A) 770
(B) 750
(C) 710
(D) 700
Answer :- (D) 700
Solution:-
Let the number be x.
According to the condition, when x increased by 11% it became 777. This can be expressed mathematically as:-
⇒ x + 11% of x = 777
⇒ x + (11/100) x = 777
⇒ x + 0.11x = 777
⇒ 1.11 x = 777
⇒ x = 777/1.11
⇒ x = 77700/111
⇒ x = 700
So, the answer is Option (D) 700