A father said to this son, "I was as old as you are at the present at the time of your birth". If the father's age is 38 years now, the son's age five year's back was :

In a group of people solicited by a charity, 30% contributed TK. 40 each, 45% contributed TK. 20 each and the...

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.