Question

a tricycle is sold at a gain of 16%. had it been sold for rs 100 more the profit would have been 20%. find its cost

Answer 1

Let the cost price be $x
 There is a difference of $100 between the two so,
(20/100x)-(16/100x)=100
4x/100                     =100
4x                            =10000
           x                    =2500    
I hope that this helps you 

Answer 2

let the cost BX therefore there is difference of 100 between two numbers is equal to 2108 - 16 upon hundred x is equal 200 4 x 100 is equal to 104 f is equal to mm is equal to 2500