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SAI INTERNATIONAL SCHOOL
                                                      CLASS – VII,

                SUB: MATHS
                 CHAPTER-8: COMPARING QUANTITIES

               SUBTOPIC: Increase or decrease as Percent

               Worksheet-2


               1. Find the resulting new increased or decreased quantity due to:

               (i) 8 % decrease in $ 400

               (ii) 5 % increase in 25 km

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               (iii) 12 / 2 % increase in a speed of 600 km/h

               (iv) 30 % decrease in a temperature of 40° Celsius

               (v) 2.5 % increase in a salary of $ 1250

               2. Increase 150 by 10 % and decrease the same by 15 %. Find the new number in each
               case.

               3. The population of a place in a particular year increased by 15 %. Next year it
               decreased by 15%. Find the net increase or decrease per cent in the initial population.

               4. While measuring a line segment of length 5 cm, it was measured 5.2 cm by mistake.
               Find the percentage error in measuring the line segment.

               5. A number is increased by 40 % and then decreased by 40 %. Find the net increase
               or decrease per cent.

               6. The price of wheat increased by 10 %. By how much per cent should mother reduce
               her consumption in the house so that her expenditure on wheat does not increase?

               7. The salary of a doctor is increased by 40 %. By what per cent should the new salary
               be reduced in order to restore the original salary?

               8. A number 75 is misread as 57. Find
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