TCS Company Numerical Ability Profit and Loss

Sebastian purchased an infinity stone and saved Rs. 200 when a discount of 25% was given. What is the Cost Price of the infinity stone?
1)Rs. 1000 2)Rs. 900 3)Rs. 800 4)Cannot be determined

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TCS Other Question

The Simple Interest on a sum is Rs. 300 and the Compound Interest is Rs. 360 in the second year. What would be the Compound Interest for one year, compounded annually, on a different sum of Rs 6000 if the rate percent p.a. is the same as that of on the first sum?
1)Rs. 2400 2)Rs. 1200 3)Rs. 3000 4)None of the above
Two laptops, three mobiles, and four flash drives cost Rs. 1 lakh. 6 such mobiles, 8 such flash drives, and 4 such laptops cost Rs. 1.5 lakh. Comment on the nature of the equations formed by the given data?
1)Consistent 2)Inconsistent