Data Interpretation - Table Charts - Discussion

Discussion Forum : Table Charts - Table Chart 6 (Q.No. 1)
Directions to Solve

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 1992 75 144 114 102 108 543 1993 90 126 102 84 126 528 1994 96 114 75 105 135 525 1995 105 90 150 90 75 510 1996 90 75 135 75 90 465 1997 105 60 165 45 120 495 1998 115 85 160 100 145 605

1.
What was the approximate percentage increase in the sales of 55AH batteries in 1998 compared to that in 1992?
28%
31%
33%
34%
Explanation:

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

Discussion:
15 comments Page 1 of 2.

Mathew panicker said:   1 decade ago
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.
(1)

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.

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%.

Sameera said:   5 years ago
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.
(5)

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.

Latha said:   8 years ago
By using this formula you can understand @leo. %=((Final value-initial value)/(initial value))x100.
(1)

Dorji choden said:   5 years ago
Why should we divide by 108 when we can show the comparison from the subtraction itself?
(1)

Jennifer Karkada said:   3 years ago
Agree, @Swathi.

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

Muyiwa99 said:   7 years ago
We are dividing by 108 because the question says compared to 1992 for 55Ah.

Pabitra said:   3 years ago
Why should we have to divide by 108 can somebody explain it in a clear way?
(3)