Page 177 - Start Up Mathematics_8 (Non CCE)

3. 14% of ___________ grams is 392 grams.

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4. 120 when decreased by 27 % is equal to ___________.
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5. of 1,206 is equal to ___________% of 134.
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Answer in One Word or a Line
1. How do you find the percentage of a number?

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2. Which is largest in 8 %, % and 0.14%?
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3. What will be 20% of ` 185?
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4. Express as a percentage.
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5. A period of 4 hours 30 minutes makes up what percent of a day?

let’s evaluate
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1. Write each as percent: (a) 0.005 (b) (c) 1
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2. Convert these percentages to fractions and ratios: (a) 0.4% (b) 3.5% (c) 112%
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3. Find x if: (a) 13.25% of x is 159 (b) % of x is 2.4
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4. 10% of the sheep in a farm died in flood. 40% of the remaining died due to some disease. If 594 sheep
were alive, how many sheep were there in the farm?
5. After spending 80% of her money, Divya is left with ` 800. How much money did she have in the
beginning?

Thinking Skills

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1. What is 66 % of 2 kg 6 hg 3 dag 7 g?
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2. One type of liquid contains 25% of milk, the other contains 30% of milk. A cistern can be filled with
6 parts of the first liquid and 4 parts of the second liquid. Find the percentage of milk in the new
mixture.
3. Due to fall in manpower, the production in a factory decreases by 25%. By what percentage should the
working hour be increased to achieve the original production?
[Hint: Production = Manpower × Working hours]
4. Ashish deposited 50% of the initial amount in his locker. And again after sometime he deposited 20% of
the increased amount. Now the amount becomes ` 18,000. How much was the initial amount?

Values and Life Skills

1. Anushka pays 5% tax in addition to the price of a pen. Find the price of the pen, if she pays ` 5.25 in all.
Why we should pay all our taxes on time?
2. Varun saves 20% of his monthly income. After six months, he finds that he has ` 10,800 as his savings.
Find his monthly income. Give two ways in which one can invest money for savings?

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