If $60\%$ people in a city like cricket, $30\%$ like football and the remaining like other games, then what percent of the people like other games? 

We have, 
People who like cricket $=60\%$
People who like football $=30\%$
$\therefore$ People who like other games $=(100-60-30)\%=10\%$
Total number of people $=5000000$
$\therefore$ People who like cricket $=\frac{60}{100}\times 5000000=3000000=30$ lakh
People who like football $=\frac{30}{100}\times 5000000=1500000=15$ lakh
And, the people who like other games $=\frac{10}{100}\times 5000000=500000=5$ lakh