EXPLANATION
IQ6. Which number can replace both question marks? 2/? = ?/50
a. 10
b. 16
c. 50
d. 36
ANSWER: a) 10
EXPLANATION:
The number that can replace both question marks is 10.
To solve for the unknown number, we can cross-multiply the equation. This means that we multiply the denominator of the first fraction by the numerator of the second fraction, and vice versa.
2/x = x/50
2 * 50 = x * x
100 = x²
Taking square root on both side we get
x = ±10.
In the given options the correct will be a) 10
