Question

what weight of student in group of 10 students is 60kg .the individual weight of them are 42,44,49,5,52,5,54,69,70 and 84 are 74kgs .what is the weight of the 10th student? ​

Answer 1

Explanation:

The summed weight of all students divided by 10 is the average 60.

(42+44+49+52+54+69+70 +84+74+x) / 10 = 60 ( I deleted the '5' s )

(42+44+49+52+54+69+70 +84+74+x) = 10 * 60

x = (10*60) - (42+44+49+52+54+69+70 +84+74)

you can finish I am sure.....