3 Marks Question

Question 13 Marks

(i) What was the percentage decline in the production of fertilizers from 1997 to 1998 ?
(ii) What was the percentage increase in production of fertilizers in 2002 compared to that in 1995 ?

Answer

$\begin{array}{l}\text { (i) Required percentage }=\left[\frac{(45-60)}{60} \times 100\right] \% \\ =-25 \%\end{array}$
Therefore, there was a decline of $25 \%$ in production from 1997 to 1998.
(ii) Required percentage $=\left[\frac{(80-25)}{25} \times 100\right] \%=220 \%$
Therefore, there was a increases of $220 \%$ in production of fertilizers in 2002 compared to that in 1995.

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Question 23 Marks

The following line graph gives the ratio of the amounts of imports by a company to the amount of exports from that company over the period from 1995 to 2001.

If the imports in 1998 was ₹ 250 crores and the total exports in the years 1998 and 1999 together was ₹ 500 crores, then what was the import in 1999?

Answer

The ratio of imports to exports for the years 1998 and 1999 are 1.25 and 1.40 respectively. Let the exports in the year 1998 = x crores Then, the exports in the year 1999 = ₹ ( 500 -x )
$\therefore 1.25=\frac{250}{x} \Rightarrow x=\frac{250}{1.25}=200$
[Using ratio for 1998]
Let the imports in the year 1999 = ₹ y crores
Then, $1.40=\frac{y}{300} \Rightarrow y=1.40 \times 300=420$
Therefore, imports in the year 1999 was ₹ 420 crores.

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Question 33 Marks

Give four examples of data that you collected from your day-to-day life.

Answer

(i) Number of students in our class.
(ii) Electricity bills of our house since last two years.
(iii) Election results obtained from television or newspaper.
(iv) Literacy rate figures obtained from educational survey.

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Applied Maths 3 Marks Question

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