Data Interpretation - Table Charts - Discussion

The following table gives the sales of batteries manufactured by a company over the years.

Number of Different Types of Batteries Sold by a Company Over the Years (Numbers in Thousands)

Year Types of Batteries
4AH 7AH 32AH 35AH 55AH Total
199275144114102108543
19939012610284126528
19949611475105135525
1995105901509075510
199690751357590465
19971056016545120495
199811585160100145605

1. 

What was the approximate percentage increase in the sales of 55AH batteries in 1998 compared to that in 1992?

[A]. 28%
[B]. 31%
[C]. 33%
[D]. 34%

Answer: Option D

Explanation:

Required percentage
= [ (145 - 108) x 100 ] %
108
= 34.26%
~= 34%.


Mathew Panicker said: (Oct 20, 2010)  
I normally get confused with taking the total sales in consideration.

I take the percetage share of battery of 55ah in 1998 & 1992 then do calculation which turns out to be wrong.

So help me out with the explaination.

What I do is 145/605*100 = 23% and 108/543*100 = 19%.

So percetage growth is 4% which is wrong.

Kavi said: (Aug 25, 2012)  
Why we dividing by 108?

Snehal said: (Sep 19, 2012)  
We have divided it by 108, because I believe in question it is asked to (compared to 1992) & in 1992, 108 sales is being done.

Likitha said: (Apr 13, 2013)  
Why should we divide by 108 please can anyone explain me?

Swathi said: (Apr 22, 2013)  
We are dividing by 108 since in the question they have asked "the sales of 55AH batteries in 1998 compared to that in 1992?".

Here its been compared to 1992 55AH batteries.

So divide by 108.

Swathi said: (Jan 3, 2014)  
Why you did subtraction directly we can do 145/108*100 na?

Ganesh said: (Mar 17, 2014)  
Applying % increase formula because we have to compare batteries from 1992 to 1998.

So actual increase i.e 37/original quantity*100.

i.e.
145-108/108*100 = 34%.

Smita said: (Sep 16, 2014)  
It is to be divide by 108 because it is the base year.

Leo said: (Jan 5, 2016)  
I am confused with this answer. Kindly define it in easiest way.

Latha said: (Mar 18, 2016)  
By using this formula you can understand @leo. %=((Final value-initial value)/(initial value))x100.

Muyiwa99 said: (Sep 29, 2017)  
We are dividing by 108 because the question says compared to 1992 for 55Ah.

Dorji Choden said: (Jan 16, 2019)  
Why should we divide by 108 when we can show the comparison from the subtraction itself?

Sameera said: (Feb 1, 2019)  
According to % rule, when we compare between 2 value then, we sub. 1st value into last value and divided by 1st value. So, here divided by 108 which a 1st value.

Jennifer Karkada said: (Jun 25, 2021)  
Agree, @Swathi.

If it were to be compared by 1998, will it be 145-108/145*100?

Pabitra said: (Aug 18, 2021)  
Why should we have to divide by 108 can somebody explain it in a clear way?

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