Learn
QUESTION
Q
If the average of x, x − 8, x + 2 and 4x + 4 is 10, then the product of the numbers is ?
If the average of x, x − 8, x + 2 and 4x + 4 is 10, then the product of the numbers is ?
A
10560
B
−10560
C
2688
D
−2688
E
None of these
A
10560
B
−10560
C
2688
D
−2688
E
None of these
Solution
Sum of the numbers is = 10 × 4 = 40
x + (x − 8) + (x + 2) + (4x + 4) = 40
7x − 2 = 40
Therefore, x =...
Sum of the numbers is = 10 × 4 = 40
x + (x − 8) + (x + 2) + (4x + 4) = 40
7x − 2 = 40
Therefore, x = 42/7 = 6
Product of the numbers is
= (x) (x − 8) (x + 2) (4x + 4)
= (6) (6 − 8) (6+ 2) (24 + 4)
= (6) (−2) (8) (28)
= −2688
Register & Unlock access to Prep for free
Solution
.hez-title-solution{display: none;}
Keynote
#hez-keynote-title{display: none;}
0
Averages questions available for your Free Practice
0
Quantitative Ability questions available for your Free Practice
Practice
0
questions for Free
