Multiple choice

A and B went to a hotel. A paid Rs. 84 for 3 plates of idli and 5 plates of dosa. Whereas B took 5 plates of idli and 3 plates of dosa and paid Rs. 76. What is the cost of one plate of Idli?

  1. Rs. 6

  2. Rs. 8

  3. Rs. 10

  4. Rs. 12

  5. Rs. 15
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

3I + 5D = 84 ……….(1) 5I + 3D = 76 ………(2) Multiply equation (1) by 3 and equation (2) by 516I = 128⇒ I = 8 Each plate of idli costs Rs. 8. Option (b) is correct.

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