The number a is 110 % greater than the number b . The number b is 90 % less than

Question

The number a is 110 % greater than the number b . The number b is 90 % less than 47 . What is the value of a ?

Accepted Answer

The correct answer is 9.87 . It&rsquo;s given that the number a is 110 % greater than the number b . It follows that a = 1 + 110 100 b , or a = 2.1 b . It&rsquo;s also given that the number b is 90 % less than 47 . It follows that b = 1 - 90 100 47 , or b = 0.1 47 , which yields b = 4.7 . Substituting 4.7 for b in the equation a = 2.1 b yields a = 2.1 4.7 , which is equivalent to a = 9.87 . Therefore, the value of a is 9.87 .

Question the-nu