If a sum doubles in four years at the rate of `R%` per annum simple in – InterviewSolution

InterviewSolution

1.	If a sum doubles in four years at the rate of `R%` per annum simple interest, then `3R=____________.`A. 30B. 45C. 75D. 90
Answer» Correct Answer - C Let the sum be P=Rs. 100. As given, P=Rs. 100, A=Rs. 200, T = 4 years. Then, `SI=A-P=Rs. 200-Rs.100=Rs.100` We have `SI=(PTR)/(100)` `implies100=(100xx4xxR)/(100)impliesR=(100)/(4)=25implies3R=75` Hence, the correct option is ( c ).

Discussion

No Comment Found

Related InterviewSolutions

Represent the following percentages as fractions. (i) `125%" "(ii) 2.5%`
If the selling price is less than cost price, then there is a __________ in this transaction.
`{:(,"Column A",,,,,"Column B"),(,("in "Rs.),,,,, ("in "Rs.)),((a), P = 256"," I = 23,, (),, (p), A = 289),((b), P = 265"," I = 34,, (),, (q), A = 279),((c), P = 258"," I = 31,, (),, (r), A = 269),((d), P = 257"," I = 12,, (),, (s), A = 299):}`
Find the value `62%` of `19+38%` of 19.
If the cost price is equal to the selling price, then there is __________.
Find the values of `72%` of 250 and `37.5%` of 800.
If `SPgtCP`, then the difference between the selling price and the cost price is ____________.
CP = Rs. 800, MP = Rs. 1000 and SP = Rs. 900. Find the percentage of (i) discount and (ii) profit.
The simple interest on Rs.1000 at `10%` p.a. for 10 yeaRs. is ___________.
`10%" of "20%" of "100" is equal to "___________.`A. `30%" of "100`B. `2%" of "100`C. `15%" of "100`D. `200%" of "100`