Chain Rule Practice Question and Answer
7 Q: If two LED TVs and one mobile phone cost ₹31,000, while two mobile phones and one LED TV cost ₹35,000, then the value of one mobile phone is:
1074 064b4f730efb5ba166880e2df
64b4f730efb5ba166880e2df- 1₹13,500false
- 2₹12,500false
- 3₹13,000true
- 4₹12,000false
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Answer : 3. "₹13,000"
Q: Rewa has some hens and some goats. If the total number of animal heads is 100 and the total number of animal feet is 348, then what is the total number of goats with Rewa?
499 064abdf5d6390ae7fc7ac24c8
64abdf5d6390ae7fc7ac24c8- 176false
- 274true
- 355false
- 480false
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Answer : 2. "74"
Q: The cost of 3 kg of rice is ₹180. The cost of 8 kg of rice is equal to that of 5 kg of pulse. The cost of 15 kg of pulses is equal to that of 2 kg of tea. The cost of 3 kg of tea is equal to that of 6 kg of walnuts. What is the cost (in ₹) of 10 kg of walnuts?
1725 064a543cec4e3d04ca162e2c5
64a543cec4e3d04ca162e2c5- 12400false
- 23200false
- 32800false
- 43600true
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Answer : 4. "3600"
Q: The average of a set of 20 numbers is P. If one of the numbers from the set is replaced with 58, then the average becomes (P - 2). What is the value of the number that is replaced?
899 0642c09782b960e1a419611d3
642c09782b960e1a419611d3- 198true
- 294false
- 360false
- 4104false
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Answer : 1. "98 "
Q: If the cost of 10 books is ₹250, then find the cost of 15 books.
520 06413138c86fd416146954936
6413138c86fd416146954936- 1₹125false
- 2₹115false
- 3₹375true
- 4₹215false
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Answer : 3. "₹375"
Q: How many window coverings are necessary to span 50 windows, if each window covering is 15 windows long? 2656 05b5cc601e4d2b4197774b453
5b5cc601e4d2b4197774b453- 14true
- 215false
- 33false
- 450false
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Answer : 1. "4"
Explanation :
Answer: A) 4 Explanation: Given that, Number of windows = 50 Each window covering covers 15 windows => 50 windows requires 50/15 window coverings = 50/15 = 3.333 Hence, more than 3 window coverings are required. In the options 4 is more than 3. Hence, 4 window coverings are required to cover 50 windows of each covering covers 15 windows.
Q: The cost of 6 dozen apples and 8 dozen bananas is ₹ 1400. what will be the cost of 15 dozen apples and 20 dozen bananas?
1061 06033630faa2e7117ffee7cd7
6033630faa2e7117ffee7cd7- 1₹ 3600false
- 2₹ 4200false
- 3₹ 3200false
- 4₹ 3500true
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