If A borrowed Rs. P at x% and B borrowed Rs. Q (>P) at y% per annum at simple interest at the same time, then the amount of their debts will be equal after

As we know, Amount = P + Prt/100 According to the question Q + (Q × y × t)//100 = P + (P × x × t)/100 ⇒ 100Q + Qyt = 100P + Pxt ⇒ Pxy - Qyt = 100Q - 100P ⇒ t (Px - Qy) = 100 (Q - P) ⇒ t = 100 {(Q - P)/(Px - Qy)} years

(√3364+ √484) – √2916÷ √1296 × √36 ÷ √64 = ?

Speed of boat is 25 km/hr. Speed of the stream is 20% less than speed of boat. Then find time taken by boat to go 90 km downstream?

A man can row upstream at 18 km/hr and downstream at 24 km/hr. Find the man’s rate in still water and the rate of the current.

...Speed of boat is 20 km/hr. Speed of the stream is 20% less than speed of boat. Then find time taken by boat to go 90 km downstream.

More Calculation based Questions

×

×