Answer:
its cut off Step-by-step explanation:
its cut off dude
Answer:
This problem can be solved by working backwards.
Average of 30 students = 70.
Total marks of all the 30 students = 30x70 = 2100
Out of these 30, average of 20 students = 62
Total marks of these 30 students = 30x62 = 1860
So the total marks of the remaining 10 students = 2100-1860 = 240
Hence the average of the remaining 10 students = 240/10 = 24
Answer:
d=90°
e=81°
f=99°
Step-by-step explanation:
To find f
180-81
=99
