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एक परिवार में चावल, मछली तथा तेल पर खर्च का अनुपात `12 : 17 : 3` है। इन वस्तुओं के मूल्य क्रमश: 20% 30% तथा 50% बढ़ गए, तो इन वस्तुओं पर होने वाले खर्चो में कितने प्रतिशत की वृद्धि हो जाएगी ?
A. `14(1)/(8)%`
B. `7(1)/(8)%`
C. `28(1)/(8)%`
D. none of these

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Correct Answer - c
( c) Note :- In such type of question you can take values as per your need but remember ratio must be same as mentioned in question.
(नोटः इस तरह के प्रश्नो में आप अपनी जरूरत के मुताबिक मान ले सकते है। लेकिन याद रखने की अनुपात प्रश्न के मुताबिक ही हो।)
image
Required percentage increment
`=((24+51+15))/((120+170+30))xx100=90/320xx100 = 28 (1)/8%`

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