ram has already given five math test. if he scores 70 on upcoming sixth exam, his average mark goes down by 4 points. what is his average score now?

Question

ram has already given five math test. if he scores 70 on  upcoming sixth exam, his average mark goes down by 4 points. what is his average score now?

ajprincess · Answer

Let the average of five subjects  be x.
Then the total marks scored in five tests=5*x
Total marks scored in 6 tests=5x+70
Average=Total marks/number of tests
     x-4       =(5x+70)/6
6(x-4)=5x+70
Solve for x. Then to find the current average subtract 4 from the value of x. Can u do that @shreejanramdev?