Question

if average of 3,4,x and 8 is 6 the value of x is
a.9
b.6
c.7
d.3
if selling [rice of article is 4/3 times of its cost price ,the profit percent is
a.33 1/3%
b.25%
c.201/3%
d.33%

Answer 1

Average = 3+4+x+8/4
6= 15+x/4
24=15+x
x=9

Answer 2

3+4+x+8/4 = 6
15+x = 24
X = 9

Let the CP be x then SP be 4x/3
P = 4x/3 - x = x/3
P% = x/3/x* 100 = 100/3 = 33( 1/3)%