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1
A train travels 360 km at a certain speed. If the speed is increased by 20 km/h, the journey takes 2 hours less. What is the original speed of the train?
A.40 km/h
B.45 km/h
C.60 km/h
D.72 km/h
Explanation: Let original speed be x. Using time difference equation: 360/x - 360/(x+20) = 2 gives x = 60 km/h.
2
A product costs ₹47. What is 17% of its value?
A.74.9
B.77.9
C.79.9
D.82.9
Explanation: 17% of ₹47 = ₹79.9.
3
A product costs ₹21. What is 6% of its value?
A.7.6
B.10.6
C.12.6
D.15.6
Explanation: 6% of ₹21 = ₹12.6.
4
If the ratio of present ages of A and B is 5:7 and after 8 years the ratio becomes 7:9, what is A's present age?
A.20 years
B.25 years
C.30 years
D.35 years
Explanation: Let ages be 5x and 7x. Then (5x+8)/(7x+8)=7/9, giving x=5 and A=25 years.
5
A product costs ₹30. What is 15% of its value?
A.40.0
B.43.0
C.45.0
D.48.0
Explanation: 15% of ₹30 = ₹45.0.
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