I have 4GB RAM in my PC. Can I add another 8GB RAM to it? Is there any problem in adding two different RAM? - Quora
![Ram can do a work in 20 days. Raj can do (1/30) of a piece of work in a day. In how many days can they do the same work, working together? Ram can do a work in 20 days. Raj can do (1/30) of a piece of work in a day. In how many days can they do the same work, working together?](https://doubtnut-static.s.llnwi.net/static/web-thumb/645948933_web.png)
Ram can do a work in 20 days. Raj can do (1/30) of a piece of work in a day. In how many days can they do the same work, working together?
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