An engine has an efficiency of 0.25 when temperature of sink is reduced by 58^(@)C, if its efficiency is doubled, then the temperature of the source is

An engine has an efficiency of 0.25 when temperature of sink is reduce

1.	An engine has an efficiency of 0.25 when temperature of sink is reduced by 58^(@)C, if its efficiency is doubled, then the temperature of the source is
Answer» `150^(@)C` `222^(@)C` `242^(@)C` `232^(@)C` ANSWER :D