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The average of first three numbers is do...

The average of first three numbers is double of the fourth number. If the average of all the four numbers is 12, find the 4th number.
पहली तीन संख्याओं का औसत, चौथी संख्या का दुगुना है। यदि उन सभी चारों संख्याओं का ओसत 12 हो, तो चौथी संख्या ज्ञात कीजिए।

A

16

B

48/7

C

20

D

18/7

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The average of the first four numbers is three times the fifth number. If the average of all the five numbers is 85.8, then the fifth number is: पहली चार संख्याओं का औसत पाँचवीं संख्या से तीन गुना है | यदि सभी पाँच संख्याओं का औसत 85.8 है, तो पाँचवीं संख्या होगी :

Given four different numbers, the average of first three numbers is four times the fourth number and the average of all the four numbers is 52. What is the average of the first three number? चार अलग-अलग संख्याएँ दी गयी हैं, पहली तीन संख्याओं का औसत चौथी संख्या से चार गुना है तथा सभी चार संख्याओं का औसत 52 है | पहली तीन संख्याओं का औसत क्या है?

Four different numbers are given here. The average of the first three numbers is four times to the fourth number and the average of all four numbers is 87.75. What is the average of the first three numbers ? यहाँ चार अलग-अलग संख्याएँ दी गई हैं | पहली तीन संख्याओं का औसत चौथी संख्या का चार गुणा है और सभी चार संख्याओं का औसत 87.75 है | पहली तीन संख्याओं का औसत कितना है ?

The average of 9 numbers is 40. If the average of the first five numbers is 38 and the average of the last five numbers is 50, then what is the fifth number? 9 संख्याओं का औसत 40 है | यदि पहली पांच संख्याओं का औसत 38 है तथा अंतिम पांच संख्याओं का औसत 50 है, तो पाँचवीं संख्या कौन सी है?

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Of three numbers, the second is thrice the first and the third number is three-fourth of the first. If the average of the three numbers is 114, the largest number is तीन संख्याओं में से, दूसरी संख्या, पहली संख्या की तीन गुनी है तथा तीसरी संख्या, पहली संख्या की तीन-चौथाई है। यदि तीनों संख्याओं का औसत 114 है, तो सबसे बडी संख्या है-

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