Hard Math Class 9 Level 1

If the mean of 5 numbers is 18 and one number 30 is removed then what is the mean of the remaining numbers?

यदि 5 संख्याओं का माध्य 18 है और एक संख्या 30 हटा दी जाए तो शेष का माध्य क्या होगा?

A 12 / 12 B 13 / 13 C 14 / 14 D 15 / 15
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Correct Answer

D. 15 / 15

Explanation

Total sum is 90. After removing 30 the sum is 60 and there are 4 numbers so mean is 15.

कुल योग 90 है। 30 हटाने पर योग 60 और संख्याएं 4 इसलिए माध्य 15 है।

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