Question

The average of 20 numbers is 12, if each number is divided by 4, what is the new average?​

Answer 1

Answer:

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Step-by-step explanation:

Sum of 20 numbers

=20×12=240

Sum of first 12 numbers

=11×12=132

Sum of next 7 numbers

=10×7=70

∴ Last number

=240−(132+70)=240−202=38