Suppose student gets 30 marks out of 70 so how much will he get out of 100!!! And what will be the 50% of it tell me step wise step!!!
You want to calculate 3/7 of 100. Take the nearest integer. That is 43.
50% of whatever you get will be half of that number. If you want the nearest integer, take 3/14 of 100. That is 21