1]By selling a book for Rs.144 a shopkeeper loses 10%.At what price should he sell it inorder to gain 15%?
a]Rs.172 b]Rs.180 c]Rs.184 d]Rs.190

SP with CP as Rs.100 = 90 as there is 10 % loss
New SP with CP as Rs.100 = 115 as he needs 15% gain
SP with CP as Rs.100 : actual SP =New SP with CP as Rs.100 : New SP
 90 : 144 = 115 : x
90 x = 114 * 115
x = 184

2]By selling a watch for Rs.144 a shopkeeper loses 10%.At what price should he sell it inorder to gain 10%?
a]Rs.172 b]Rs.180 c]Rs.176 d]Rs.190

3] There would be 10% loss if rice is sold at Rs.5.50 per kg.At what price per kg should it be sold to earn a profit of 20%
a]Rs.7.20 b]Rs.7.02 c]Rs.7.33 d]Rs.6

4]A fruit seller sells mangoes at the rate of Rs.9/kg and thereby loses 20%.At what price per kg,he should have sold them to make a profit of 5%?
a]Rs.11.82 b]Rs.11.84 c]Rs.11.81 d]Rs.11.83

 5]When a plot is sold for Rs.18700 the owner loses 15%.At what price must the plot be sold in order to gain 15%?
a]Rs.2100 b]Rs.22500 c]Rs.25300 d]Rs.25800