Q1. An item marked Rs. 3200 gets 20% discount, then 10% GST is added. Find final price.
A
2816
B
2736
C
2856
D
2776
After discount = 2560. Final = 2560 x (100+10)/100 = 2816.
Q2. Pipe A fills a tank in 8 h and Pipe B in 24 h. If both are opened together, tank fills in?
A
4
B
6
C
7
D
5
Combined rate = 1/8+1/24. Time = 192/32 = 6 h.
Q3. An item marked Rs. 1300 gets 20% discount, then 20% GST is added. Find final price.
A
1208
B
1288
C
1248
D
1168
After discount = 1040. Final = 1040 x (100+20)/100 = 1248.
Q4. Pipe A fills a tank in 12 h and Pipe B in 24 h. If both are opened together, tank fills in?
A
9
B
8
C
7
D
6
Combined rate = 1/12+1/24. Time = 288/36 = 8 h.
Q5. An item marked Rs. 4000 gets 10% discount, then 10% GST is added. Find final price.
A
4000
B
3960
C
3920
D
3880
After discount = 3600. Final = 3600 x (100+10)/100 = 3960.
Q6. Pipe A fills a tank in 15 h and Pipe B in 30 h. If both are opened together, tank fills in?
A
9
B
11
C
10
D
8
Combined rate = 1/15+1/30. Time = 450/45 = 10 h.
Q7. An item marked Rs. 4300 gets 10% discount, then 10% GST is added. Find final price.
A
4217
B
4257
C
4297
D
4177
After discount = 3870. Final = 3870 x (100+10)/100 = 4257.
Q8. A person travels 120 km at 40 km/h and then 80 km at 40 km/h. Find overall average speed.
A
36
B
40
C
44
D
32
Total distance = 200. Total time = 3+2 = 5. Avg speed = 40 km/h.
Q9. Pipe A fills a tank in 10 h and Pipe B in 15 h. If both are opened together, tank fills in?
A
6
B
4
C
7
D
5
Combined rate = 1/10+1/15. Time = 150/25 = 6 h.
Q10. A person travels 160 km at 40 km/h and then 80 km at 40 km/h. Find overall average speed.
A
40
B
32
C
36
D
44
Total distance = 240. Total time = 4+2 = 6. Avg speed = 40 km/h.
Q11. An item marked Rs. 3000 gets 10% discount, then 20% GST is added. Find final price.
A
3200
B
3160
C
3280
D
3240
After discount = 2700. Final = 2700 x (100+20)/100 = 3240.
Q12. A person travels 80 km at 40 km/h and then 160 km at 40 km/h. Find overall average speed.
A
44
B
40
C
36
D
32
Total distance = 240. Total time = 2+4 = 6. Avg speed = 40 km/h.
Q13. An item marked Rs. 2900 gets 20% discount, then 10% GST is added. Find final price.
A
2472
B
2552
C
2512
D
2592
After discount = 2320. Final = 2320 x (100+10)/100 = 2552.
Q14. A person travels 90 km at 30 km/h and then 60 km at 30 km/h. Find overall average speed.
A
30
B
34
C
22
D
26
Total distance = 150. Total time = 3+2 = 5. Avg speed = 30 km/h.
Q15. An item marked Rs. 2500 gets 10% discount, then 10% GST is added. Find final price.
A
2515
B
2395
C
2475
D
2435
After discount = 2250. Final = 2250 x (100+10)/100 = 2475.
Q16. A person travels 120 km at 30 km/h and then 60 km at 30 km/h. Find overall average speed.
A
26
B
30
C
34
D
22
Total distance = 180. Total time = 4+2 = 6. Avg speed = 30 km/h.
Q17. Pipe A fills a tank in 9 h and Pipe B in 18 h. If both are opened together, tank fills in?
A
5
B
4
C
6
D
7
Combined rate = 1/9+1/18. Time = 162/27 = 6 h.
Q18. A person travels 200 km at 50 km/h and then 100 km at 50 km/h. Find overall average speed.
A
50
B
42
C
54
D
46
Total distance = 300. Total time = 4+2 = 6. Avg speed = 50 km/h.
Q19. A person travels 120 km at 60 km/h and then 240 km at 60 km/h. Find overall average speed.
A
64
B
60
C
56
D
52
Total distance = 360. Total time = 2+4 = 6. Avg speed = 60 km/h.
Q20. An item marked Rs. 3300 gets 10% discount, then 20% GST is added. Find final price.
A
3604
B
3524
C
3484
D
3564
After discount = 2970. Final = 2970 x (100+20)/100 = 3564.