today's question

There are 728 students in a school, 162 come to the school by bus, 384 on bicycles
and the rest by walk. What percentage of students comes to the school by walk?
Sol.
Total number of students in the school = 728
Number of students who come by bus = 162
Number of students who come on bicycle = 384
Adding these two, we get 546.
728 – 546 = 182 students come by walk.
% of students who come by walk to the school=(182/728)*100=25%

07.01.2011

Two numbers are respectively 40% and 50% more than the third number. What
percentage of the 2nd number is the first number?
Sol.
First, assume the third number to be 100
∴First number = 140
Second number = 150
∴Percentage of the first number to the second number =(140/150)*100=288/3=93 1/3 %