Civil Services HPPSC (Himachal Pradesh) HPAS Mock Test 2021 Quantitative Aptitude Ratio and Proportion Mean Proportional
When x is added into each of 20, 28, 29 and 40, the numbers so obtained in this order, are in proportion. What is the mean proportional between (3x + 4) and (2x – 4)?
1
12
2
6
3
14
4
8