Latest Hcl Aptitude Question SOLUTION: If 3?5 + ?125 = 17.88, then what will be the value of? 80 + 6?5? A. 13.41 B. 20.46 C. 21.66 D. 22.35

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(#M40166295) HCL Numerical Ability question Aptitude Keep an EYE

If 3?5 + ?125 = 17.88, then what will be the value of? 80 + 6?5?
A. 13.41
B. 20.46
C. 21.66
D. 22.35

Asked In Hcl Priya (4 years ago)

Solved Perla mounika Read Solution (3)

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Read Solution (3) :

Perla mounika  (4 years ago) Best Solution

3sqrt(5)+sqrt(125)=17.88
3sqrt(5)+sqrt(25*5)=17.88
3sqrt(5)+5sqrt(5)=17.88
8sqrt(5)=17.88
sqrt(5)=17.88/8=2.235
so,
sqrt(80)+6sqrt(5)=sqrt(16*5)+6sqrt(5)
=4sqrt(5)+6sqrt(5)
=10sqrt(5)
=10*2.25 (i.e sqrt(5)=2.25)
=22.35
ans:-D.22.35

Is this solution Helpfull? Yes (3) | No   

lakshmi  (4 years ago)

3sqrt(5)+sqrt(125)=17.88
3sqrt(5)+sqrt(25*5)=17.88
3sqrt(5)+5sqrt(5)=17.88
8sqrt(5)=17.88
sqrt(5)=17.88/8=2.235
so,
sqrt(80)+6sqrt(5)=sqrt(16*5)+6sqrt(5)
=4sqrt(5)+6sqrt(5)
=10sqrt(5)
=10*2.25 (i.e sqrt(5)=2.25)
=22.35
ans:-D.22.35

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Girija  (2 years ago)

Ans d
3√5+√125=17.88
√80+6√5=22.35

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