railway RRB Technician Grade 3 Mock Test 2024 Quantitative Aptitude Ratio and Proportion Mean Proportional
When x is added to each of 7, 13, 19 and 29 the numbers so obtatined in this order are in proportion. What is the mean proportional between (3x - 8) and (x + 5)?
1
12
2
18
3
20
4
15