engineering recuitment DRDO CEPTAM STA B Tier I (Sr. Technical Assistant) Mock Test 2022 Quantitative Aptitude Ratio and Proportion Mean Proportional
When x is subtracted from each of 25, 32, 59 and 80, the numbers so obtained, in this order, are proportional. What is the mean proportional between (3x + 1) and (5x - 4)?
1
18
2
15
3
30
4
20