60% of 90 + 90% of 60 = 3% of x^2 Find the value of x

M4maths Previous Puzzles

19 Jul 2021 Percentage

60% of 90 + 90% of 60 = 3% of x^2
Find the value of x

OPtion

1) 50
2) 60
3) 61
4) 69
5) 70
6) 55
7) 65
8) 29
9) 80
10) None of the above

Solution

60% of 90 + 90% of 60 = 3% of x^2
6*9+9*6=3*x*x/100
10800=3*x*x
x*x=3600
therefore x=60

Correct Option: 2 Best Solution (0)