Question

nisha secured 73,86,78 and 75marks in four tests. what is the least number of marks she can secure in her next test if she has to have a mean score of 80marks in five tests.

Answer 1

Mean of marks is 80
Therefore, 73+86+78+75+x /5
=312+ x /5=80
=312+x=400
=x=400-312=88

Answer 2

i hope this helps you toooo....!!!!?