Loading....
Coupon Accepted Successfully!

Quantitative Aptitude

Open Flashcards

Percentage & Averages

Question
10 out of 20
 

The average of 5 consecutive even numbers is 40. What is the sum of product of first and fifth number and 2nd and fourth number?



A 3180
B 3220
C 3120
D 3400
E None of these

Ans. A Average = middle no = 40

so series will be 36, 38, 40, 42, 44

so (36 x 44) + (38 x 42)

= (402 – 42 ) + (402 – 22 )

1600 – 16 + 1600 – 4 = 3180

Percentage & Averages Flashcard List

20 flashcards
1)
2)
3)
4)
5)
6)
7)
8)
9)
10)
11)
12)
13)
14)
15)
16)
17)
18)
19)
20)