Multiple choice

Daman purchases a new mobile phone for Rs. 16,000. He had Rs. 4,000 with him that he paid. He paid the rest after 15 months, on which he is charged a simple interest at the rate of 12% per year. Find how much total amount he pays for the mobile phone.

  1. Rs. 17,600

  2. Rs. 17,800

  3. Rs. 17,200

  4. Rs. 17,900

  5. Rs. 17,985
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Principal = 16000 - 4000 = 12000. Interest = P * R * T = 12000 * 0.12 * (15/12) = 12000 * 0.12 * 1.25 = 1800. Total amount = 4000 + 12000 + 1800 = 17800.

AI explanation

The remaining balance Daman owes is 16000 minus 4000, which equals 12000 rupees. Using the simple interest formula, the interest on this balance for 15 months at 12 percent per year is 12000 times 12 times 1.25 divided by 100, yielding 1800 rupees. The total amount he pays for the mobile phone is the initial 4000 rupees plus the 12000 rupees balance plus the 1800 rupees interest, resulting in Rs. 17,800.

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