120 minutes me 120 Question Challenge |science

An electric heater of resistance 6 ohm is run for 10 minutes on a 120 volt line. The energy liberated in this period of time is

If A can type 60 letters in a minute and B can type 120 letters in a minute, then both can type______ letter in a minute.

6 pipes fill tank in 120 minutes, then 5 pipes will it in

12% of 120 is 100.

In a class of 120 students.If 40 of them like Science' and 80 of them like 'Mathematics', then the number of students who like both Mathematicsand,' and Science' must be _(-)