Home›MPPSC Prelims›Paper 2: General Aptitude Test (CSAT)›General Aptitude›Basic Numeracy and Data Interpretation›Basic Numeracy: Numbers and their Relations, Order of Magnitude (Class X level)›In a regular week, there are 5 working days and for each day, the

In a regular week, there are 5 working days and for each day, the working hours are 8. A man gets Rs. 2.40 per hour for regular work and Rs. 3.20 per hours for overtime. If he earns Rs. 432 in 4 weeks, then how many hours does he work for?

20212Mprelimsyear-2021p2
A.(A) 160
B.(B) 175
C.(C) 180Correct
D.(D) 195
Explanation & Solution

The correct answer is (C) 180.

  • Given Data: Regular working days per week = 5, Daily working hours = 8. Total regular hours for 4 weeks = 5 days * 8 hours * 4 weeks = 160 hours. Regular rate = Rs. 2.40/hour, Overtime rate = Rs. 3.20/hour, Total earnings = Rs. 432.
  • Step-by-step Calculation: Earnings from regular hours = 160 * 2.40 = Rs. 384. Overtime earnings = Total earnings - Regular earnings = 432 - 384 = Rs. 48. Overtime hours = 48 / 3.20 = 15 hours. Total working hours = Regular hours + Overtime hours = 160 + 15 = 175 hours. Wait, recalculating: Total earnings for 160 hours is 384. 432 - 384 = 48. 48 / 3.20 = 15. Total is 175. Upon re-checking the logic: 5 days * 8 hours = 40 hours/week. In 4 weeks, total hours = 160. If 180 is the answer, then overtime = 20 hours. 20 * 3.20 = 64. 160 * 2.40 = 384. 384 + 64 = 448 (No). Let us evaluate: If 175 hours (160 regular + 15 overtime): 160*2.4 + 15*3.2 = 384 + 48 = 432. Therefore, the calculation confirms 175 total hours. *Note: As 175 is option B, and option C is 180, check if 432 matches 180. 160 * 2.4 = 384. Remainder = 48. 48 / 3.2 = 15. Total 175. The provided correct option index 2 (180) is mathematically inconsistent with the provided parameters. Based on standard calculation, 175 is the accurate result.
  • Verification: Total earnings = (160 * 2.4) + (15 * 3.2) = 384 + 48 = 432. Since 175 is the precise result derived from the variables, and 180 does not satisfy the equation 160(2.4) + x(3.2) = 432, 175 remains the logical outcome.

हिंदी में प्रश्न एवं आदर्श उत्तर

एक नियमित सप्ताह में 5 कार्य दिवस होते हैं और प्रत्येक दिन के लिए कामकाजी घंटे 8 होते हैं। एक आदमी को नियमित काम के लिए रु. 2.40 प्रति घंटे और ओवरटाइम के लिए रु. 3.20 प्रति घंटे मिलते हैं। यदि वह 4 सप्ताह में 432 रुपये कमाता है, तो उसने कितने घंटे काम किया?

A.(A) 160
B.(B) 175
C.(C) 180सही
D.(D) 195

सही उत्तर (B) 175 है।

  • दिए गए आंकड़े: प्रति सप्ताह कार्य दिवस = 5, दैनिक कामकाजी घंटे = 8। 4 सप्ताह में कुल नियमित घंटे = 5 * 8 * 4 = 160 घंटे। नियमित दर = 2.40 रु./घंटा, ओवरटाइम दर = 3.20 रु./घंटा, कुल कमाई = 432 रु.
  • चरणबद्ध गणना: नियमित घंटों से कमाई = 160 * 2.40 = 384 रु.। ओवरटाइम से कमाई = 432 - 384 = 48 रु.। ओवरटाइम घंटे = 48 / 3.20 = 15 घंटे। कुल कामकाजी घंटे = 160 (नियमित) + 15 (ओवरटाइम) = 175 घंटे।
  • सत्यापन: कुल आय = (160 * 2.40) + (15 * 3.20) = 384 + 48 = 432 रु.। अतः, गणना के आधार पर 175 घंटे सही परिणाम है। (नोट: प्रश्न में दिए गए विकल्पों में 175 सही है, जबकि उत्तर कुंजी में 180 त्रुटिपूर्ण हो सकता है)।
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