If 35 is subtracted from a number, it reduces to its 80%. What is (4/5)th of that number ?यदि किसी संख्या में से 35 घटा दिया जाए, तो वह 80% रह जाती है। संख्या का (4/5)वाँ भाग क्या है ?

1. A70
2. B90
3. C120
4. D140

Pick an option to check yourself, or open the answer below.

Show answer & explanation

Correct answer: D. 140

Explanation

Let the number be N. N − 35 = 80% of N = 0.8N, so 0.2N = 35 and N = 175. Then (4/5) of N = 4/5 × 175 = 140.माना संख्या N है। N − 35 = N का 80% = 0.8N, अतः 0.2N = 35 और N = 175। तब N का 4/5 = 4/5 × 175 = 140।