engineering recuitment NMDC Maintenance Assistant Fitter 2021 Mock Test Quantitative Aptitude Ratio and Proportion
The average of one-sixth of a number and one-fourth of the same number is 20. This number is k times of 8. Find the ratio of the numbers 39 and 18 when k is subtracted from the former and k is added to the latter.
1
7 ∶ 10
2
9 ∶ 10
3
11 ∶ 10
4
13 ∶ 10