উত্তর সিলেক্ট করলে সঠিক ও ভুল দেখাবে।
ব্যাখ্যা ও সঠিক সমাধান
উত্তর:
5
this question should be -
If 6 workers can complete 9 identical jobs in 3 days, how long (in days) will it take 4 workers to complete 10 such jobs?
Solution:
6 workers can complete 9 identical jobs in 3 days.
∴1 worker can complete 1 identical jobs in = (6 x 3)/9 days
∴4 workers can complete 10 identical jobs in = (6 x 3 x 10) /(9 x4) days = 5days
4 workers can complete 10 jobs in 5 days. (ans)