Average price of 80 computers in an electronic shop is Rs., 30,000 . If highest and lowest price com

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The average price of $80$ computers in an electronic shop is $Rs.\, 30,000 .$ If the highest and lowest price computers are sold out then the average price of the remaining $78$ computers is $Rs.\, 29,500 .$ The cost of the highest price computer is $Rs.\, 80,000 .$ The cost of lowest price computer is in $Rs.$

A

$19000$

B

$20000$

C

$29000$

D

$21000$

Solution

The price of the costliest and cheapest computers

$=(80 \times 30,000)-(78 \times 29,500)=99,000$

Therefore the price of cheapest computer

$=99,000-80,000=19,000$

Standard 13

Quantitative Aptitude

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