A loan of Rs. 1200 at simple interest equals years equal to rate. Find rate. A. 3.6 B. 6 C. 18 D. Cannot determine Explanation: The SI formula gives a rate of 6%.
Investment of Rs. 13900 split into two parts gives equal returns. One part is ____. A. Rs. 6400 B. Rs. 6500 C. Rs. 7200 D. Rs. 7500 Explanation: Solving Equation gives Rs. 6400.
If salary increases 20% then decreases 20%, net effect is ____. A. Rs. 8000 B. Rs. 7500 C. Rs. 7400 D. Rs. 7200 Explanation: Net decrease = 4%.
If Masood is 18 years now, when will he be thrice his age 4 years ago? A. 12 B. 21 C. 18 D. None Explanation: Equation gives no integer solution.
If Masood invests Rs. 12000 at 12% and rest at 15%, total return is ____. A. Rs. 4500 B. Rs. 6000 C. Rs. 5500 D. Rs. 4000 Explanation: The weighted average is Rs. 4000.
Two people work together. One types 32 pages in 6 hRs. Time to complete 100 pages is ____. A. 7 hr 15 min B. 7 hr 30 min C. 8 hr 15 min D. 8 hr 30 min Explanation: The rate method gives 8 hr 15 minutes.
Machine P prints 1 lakh books in 8 hrs, Q in 10 hrs, R in 12 hRs. All start together. When will 1 lakh be printed? A. 3 pm B. 2 pm C. 1 pm D. 11 am Explanation: Combined rate gives 4 hrs → 1 pm.
Least perfect square divisible by 21, 36 and 56 is ____. A. 3600 B. 504 C. 441 D. 7056 Explanation: Make prime powers even → 7056.
LCM of 455, 117 and 338 is ____. A. 10670 B. 106470 C. 104670 D. 107470 Explanation: Prime factorization gives 106470.