By how much percentage 700 has to be increased to make it 840? | CLASS 14 | RRB NTPC 28TH DECEMB...

A Carnot's engine whose sink is at temperature of 300K has an efficiency of 40% By how much should the temperature of the source be increased so as to increase the efficiency to 60%?

As per the government rules, how much percentage of advance tax needs to be paid by 15th June by an individual who is liable to pay advance tax?

A Carnot engine whose sinl is at 300K has an efficiency of 40% . By how much should the temperature of source be increased so as to increase its efficiency by 50% of original efficiency.