Aptitude - Surds and Indices - Discussion

Discussion Forum : Surds and Indices - General Questions (Q.No. 3)
3.
Given that 100.48 = x, 100.70 = y and xz = y2, then the value of z is close to:
1.45
1.88
2.9
3.7
Answer: Option
Explanation:

xz = y2       10(0.48z) = 10(2 x 0.70) = 101.40

0.48z = 1.40

z = 140 = 35 = 2.9 (approx.)
48 12

Discussion:
20 comments Page 2 of 2.

Roseline Aderonke said:   1 decade ago
The workings are well understood once it is strictly followed step by step.
(1)

Jaichu said:   8 years ago
Please explain me.

0.48z = 1.40.
z =140/48.

How could they multiply it?

Kumar arpit said:   10 years ago
That seems correct to me. I think this is the correct way.

Rakesh Tanti said:   1 year ago
Difficult to understand. Anyone, please explain.
(2)

Thiyaguaxrev4fvtr said:   9 years ago
How to get the answer? Please explain me.

Sanjay said:   1 decade ago
What is the appropriate meaning of 2^0.5?

Fazila said:   1 decade ago
I think its something different method.

Naman said:   6 years ago
I cannot understand it.
(2)

Jesophat said:   7 years ago
48/100 = 0.48z =1.4z.

Aniket Gaikwad said:   8 years ago
Thanks @Tulasi.


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