A television producer sold 150 televisions in a special 6-day sale offer. During the sale offer, each day the company sold 6 more televisions than what was sold the day before. How many televisions were sold on the 6th day?

Created: 6 years ago | Updated: 3 years ago

Updated: 3 years ago

none of these

Agrani bank Ltd Agrani bank Ltd - Officer 04.07.2008 গণিত লাভ-ক্ষতি (Profit and loss)

ব্যাখ্যা

378

Best Ans:

Sum = n/2 [ 2a + ( n – 1) d ]

বা, 150 = 6/2 [ 2 × x + ( 6 - 1) × 6 ]

বা, 300 = 6 [ 2x + 30 ]

বা, 300 = 12x + 180

বা, x = 10

Sell at 6th day = 10 + ( 6 - 1) 6 = 10 + 30 = 40

6 years ago

0 0

Md Azizur Rahman

Founder of Satt

লাভ-ক্ষতি (Profit and loss)