Given below are two statements:
Statement (I): One-fourth of sixty percent of a number is equal to two-fifth of twenty percent of another number. Then the respective ratio of the first number to the second number is 8:15.
Statement (II): A student is studying for a test from 11:00 am to 8:00 pm on weekdays and one-third of that time on Saturday. On Sunday, he takes a break and goes for a movie. The fractional part of the entire week that the student is studying is 3/7.
In the light of the above statements, choose the correct answer from the options given below:नीचे दो कथन दिए गए हैं:
कथन (I): किसी संख्या के साठ प्रतिशत का एक-चौथाई, किसी दूसरी संख्या के बीस प्रतिशत के दो-पाँचवें के बराबर है। तब पहली संख्या और दूसरी संख्या का क्रमशः अनुपात 8:15 है।
कथन (II): एक विद्यार्थी सप्ताह के कार्य-दिवसों में प्रातः 11:00 बजे से रात्रि 8:00 बजे तक तथा शनिवार को उस समय का एक-तिहाई परीक्षा की तैयारी करता है। रविवार को वह विश्राम लेता है और फ़िल्म देखने जाता है। पूरे सप्ताह का वह भिन्नात्मक भाग, जिसमें विद्यार्थी अध्ययन करता है, 3/7 है।
उपरोक्त कथनों के आलोक में, नीचे दिए गए विकल्पों में से सही उत्तर चुनिए:
Pick an option to check yourself, or open the answer below.
Show answer & explanation
Correct answer: C. Statement (I) is true but Statement (II) is falseकथन (I) सत्य है, लेकिन कथन (II) असत्य है
Explanation
Statement (I): (1/4)(0.60x) = (2/5)(0.20y) → 0.15x = 0.08y → x : y = 8 : 15 — true. Statement (II): 11:00 am to 8:00 pm is 9 hours a day, so the five weekdays give 9 × 5 = 45 hours; Saturday gives one-third of that daily time, i.e. 3 hours. Total study = 48 hours. The whole week has 7 × 24 = 168 hours, and 48/168 = 2/7, not 3/7 — false. Hence Statement (I) is true but Statement (II) is false.कथन (I): (1/4)(0.60x) = (2/5)(0.20y) → 0.15x = 0.08y → x : y = 8 : 15 — सत्य। कथन (II): प्रातः 11:00 से रात्रि 8:00 = प्रतिदिन 9 घंटे, अतः पाँच कार्य-दिवसों में 9 × 5 = 45 घंटे; शनिवार को उस दैनिक समय का एक-तिहाई = 3 घंटे, अतः कुल अध्ययन = 48 घंटे। पूरे सप्ताह में 7 × 24 = 168 घंटे होते हैं और 48/168 = 2/7 है, 3/7 नहीं — असत्य। अतः कथन (I) सत्य, कथन (II) असत्य।More Mathematical Reasoning and Aptitude questions
- Given below are two statements: Statement (I): A man sells his goods at 10% profit. If he sells his goods at 15% profit, he gets ₹160 more.…
- A man who can swim 48 meter/minute in still water swims 200 meter against the current and 200 meter with the current. If the difference bet…
- The price of a jewel, passing three hands, rises on the whole by 65%. If the first and second sellers earned 20% and 25% profit respectivel…
- In an examination 42% students failed in Mathematics and 52% failed in Science. If 17% failed in both the subjects, find the percentage of…
- 729 ml of a mixture contains milk and water in the ratio of 7 : 2. How much more water is to be added to get a new mixture containing milk…
- Find the next term in the series given below. 124, 148, 196, 268, 364, ?