engineering recuitment DRDO CEPTAM STA B Tier I (Sr. Technical Assistant) Mock Test 2022 Quantitative Aptitude Time and Work Work Efficiency
A can do 75% of the work in 30 days while B can do 50% of the same work in 18 days. If they work together, what fraction of the work will be done in 1 day?
1
\(\frac{1}{{19}}\)
2
\(\frac{1}{{20}}\)
3
\(\frac{7}{{120}}\)
4
\(\frac{19}{{360}}\)