Started 3 weeks ago by Nishant ranjan in
A mixture P is formed by removing a certain amount of coffee from a coffee jar and replacing the same amount with cocoa powder. The same amount is again removed from mixture P and replaced with same amount of cocoa powder to form a new mixture Q. If the ratio of coffee and cocoa in the mixture Q is 16 : 9, then the ratio of cocoa in mixture P to that in mixture Q is
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13 Replies
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@dhruvta901
Replied 3 weeks ago
QA A sum of Rs 2,912 is due to be repaid at the end of three years. If it has to be repaid in three equal annual instalments (the first instalment being paid at the end of the first year) at 20% p.a. compounded annually, find the value of each instalment. (in Rs).
@dhruvta901
Replied 3 weeks ago
QA A train starts from P towards Q, which is 120 km away of from P, at a speed of 45 km/hr. After 20 minutes, another train starts from Q towards P at a speed of 90 km/hr. If the trains meet at M, what is the distance (in km) between P and M?
@dhruvta901
Replied 3 weeks ago
QA A train starts from P towards Q, which is 120 km away of from P, at a speed of 45 km/hr. After 20 minutes, another train starts from Q towards P at a speed of 90 km/hr. If the trains meet at M, what is the distance (in km) between P and M?