In a group of people solicited by a charity, 30% contributed TK. 40 each, 45% contributed TK. 20 each and the rest contributed TK. 12 each. What percentage of the total amount came from people who gave TK. 40 each ?

A manufacturer of pickles wants to make a profit of TK. 75 when he sells 300 jars of pickles. It costs TK. 0.6...

A students first reduced a number by 20% and then increased it again by 20% . If the difference between the la...

35% of Tahia's income is equal to 25% of Nona's income . The ratio of Tahia's income to Noria's income is :

A watch which gains 5 seconds in 3 minutes was set right at 7am . In the afternoon of the same day when the tr...

Which of these numbers are least like the others : 3, 5, 11, 14, 17, 21.

Insert the missing number : 16, 33, 67, 135, 271, (...)