Find the correct sentence(s):-
a.) An improved version of the valves used in Hong Kong were sent to the Karolinska Institute in Sweden last year, Dr Baruah says. b.) The durability of this batch of 90 "third-generation" valves, as Baruah calls them, has been improved enormously .c.) The mecha...

3. Pawan and Qureshi working together can do a piece of work in 10 days whereas Qureshi and Rohitworking together can do the same work in 12 days. All three work together to do a job for which theyare paid Rs. 300. If Qureshi’s share is Rs. 140, then what is Pawan’s share?