A man lends Tk 10000 in four parts. If he gets 8% on tk 2000, 7.5% on Tk 4000 and 8.5% on Tk 1400, what percent must he get for the remainder, if the average interest is 8.13%?

A man rows at 6 km/hr in still water and 4.5km/hr against current. His rate along the current is :

Nazir can wash his car 15 minutes while his son takes twice as long. If they work together how many minutes wi...

A batsman in his 17th innings makes a score of 85 and thereby increases his average by 3, his average after th...

Income of A is 25% less than B. How much percent B's income would be more than that of A?

Two pipes A & B would fill a tank in 20 & 30 minutes respectively. Both pipes being open, find when A must be...

What percentage of profit is made by selling an article at a certain price if by selling at two third of that...