Question

Anyone can solve the Q.no. 4.Today is my test .Please.

Answer 1

This is very simple.
U have both principles rate and time.
1.Calculate SI of Reena on this formula
I=P x r x t/100
Now add this interest to the principal, u will get the amount of Reena.


2.U have the time principal and rate of Ruchira.
Put that values in the formula of compound Interest.
A=P(1 +r/100)^t

Here u will directly get the amount.
Now compare whose amount is more and subtract the less amount from more amount u will get the difference.


Never fear by seeing questions. Try ur best to decode the concet which is being asked


Hope it helps u