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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 8

A Family of 5 Persons Can Be Maintained for 20 Days with Rs.2,480. Find, How Long Rs.6944 Maintains a Family of 8 Persons? - Mathematics

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प्रश्न

A family of 5 persons can be maintained for 20 days with Rs.2,480. Find, how long Rs.6944 maintains a family of 8 persons?

बेरीज

उत्तर

A family of 5 persons can be maintained with Rs.2480 for = 20 days

A family of 5 persons can be maintained with Rs.1 for =`20/2480` days

A family of 5 persons can be maintained with Rs.6944 = `20/2480xx6944=1/124xx6944`

= 56 days

A family of 1 person can be maintained

= 56 × 5 days

A family of 8 persons can be maintained

= `(56xx5)/8` days

= 7 × 5 days

= 35 days

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Concept for Unitary Method (With Only Direct Variation Implied)
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 10: Direct and Inverse Variations - Exercise 10 (D) [पृष्ठ १२९]

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सेलिना Concise Mathematics [English] Class 8 ICSE
पाठ 10 Direct and Inverse Variations
Exercise 10 (D) | Q 6 | पृष्ठ १२९
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