Answer:
1 draw a line of 7.5 cm YZ by scale
2 construct the 90 degree with the help of protecter
3 then cut arc of 6 cm on 90 degree of angle & mark as X
4 join X and Z by scale
mean = sum/n
mean = (5 + 7 + 7 + 9 + 12 + 16 + 21)/7
mean = 77/7
mean = 11
His commission rate would be 4%
480/12000=.04
Y would be 16,
y=kx
6=3k
2=k
y=2(8)
y=16
Answer:
first box is 4/5 and the second box (=) is 7/15
