Question

A number is reduced by 10 % successively for two times.Thus the
original number is changed by
(a) 20% (b) 19% (c) 21% (d) 10 1/10%

Answer 1

Answer:

b)19%

Step-by-step explanation:

suppose number is 100

10% of 100 = 10

100 - 10 = 90

10% of 90 = 9

90 - 9 = 81

thus answer is 19%

Answer 2

(b) 19 %

(100 - 81)% = (19/100) = 19 %