Answers

2015-08-16T18:39:01+05:30
10 is one of them. It is the only known one.

90-10=80
80/8=10
0
2015-08-16T19:35:49+05:30
X=1/8 of 90-X. On solving for X, we get X =10.
2 5 2
x + 90-x= 90
1/8[90-x] + 90-x = 90 = {90-x+ 8[90-x] }/8= 90-x+720-8x=720;90=9x: x=90/9=10
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