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Rajesh bought 13 kg of peanuts. He saved? 195 by using a store coupon. How much did he save per kg of ground nuts?
  • a)
    Rs. 10                         
  • b)
    Rs. 20
  • c)
    Rs. 18            
  • d)
    Rs. 15
Correct answer is option 'D'. Can you explain this answer?
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Rajesh bought 13 kg of peanuts. He saved? 195 by using a store coupon....
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Rajesh bought 13 kg of peanuts. He saved? 195 by using a store coupon....
Solution:

Given, Rajesh bought 13 kg of peanuts and he saved Rs. 195 by using a store coupon.

Let the cost of 1 kg of peanuts be x.

Total cost of 13 kg of peanuts = 13x

With the store coupon, Rajesh saved Rs. 195.

Therefore, the cost of 13 kg of peanuts after discount = 13x - 195

We need to find how much Rajesh saved per kg of groundnuts.

Let y be the amount saved per kg of groundnuts.

y = (13x - (13x - 195))/13

y = 195/13

y = Rs. 15

Therefore, Rajesh saved Rs. 15 per kg of groundnuts.

Hence, the correct answer is option D, Rs. 15.
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Rajesh bought 13 kg of peanuts. He saved? 195 by using a store coupon. How much did he save per kg of ground nuts?a)Rs. 10 b)Rs. 20c)Rs. 18d)Rs. 15Correct answer is option 'D'. Can you explain this answer?
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