Question

The number of PhD teachers in university B is approximately what percent of the total number of teachers in the university?

• A. $54\%$
• B. $68\%$
• C. $64\%$
• D. $52\%$
• E. $58\%$

Answer 1

The correct option is C $64\%$

Number of PhD teachers in university B
$=\frac{250\times 74}{100}+\frac{105\times 40}{100}=185+42=227$
$\therefore$ required percentage
$=\left(\frac{227}{250+105}\right)\times 100=\frac{227}{355}\times 100=64\%$