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For an amount, explain why, a 20% increa...

For an amount, explain why, a 20% increase followed by a 20% decrease is less than the original amount.

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NCERT EXEMPLAR-COMPARING QUANTITIES-Exercise
  1. Mr. Arora borrowed Rs 40960 from a bank to start a play school. If the...

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  2. The following items are purchased from showroom: T-Shirt worth Rs 12...

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  3. Music CD originally priced at Rs 120 is on sale for 25% off. What is t...

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  4. Store A and Store B both charge Rs 750 for a video game. This week the...

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  5. At a toy shop price of all the toys is reduced to 66% of the original ...

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  6. A store is having a 25% discount sale. Sheela has a Rs 50 gift voucher...

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  7. Living on your own: Sanjay is looking for one-bedroom appartment on r...

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  8. For an amount, explain why, a 20% increase followed by a 20% decrease ...

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  9. Sunscreens block harmful ultraviolet (UV) rays produced by the sun. Ea...

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  10. A real estate agent receives Rs 50,000 as commission, which is 4% of t...

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  11. With the decrease in prices of tea by 15% Tonu, the chaiwallah, was ab...

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  12. Below is the Report Card of Vidit Atrey. Vidit’s teacher left the last...

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  13. Sita is practicing basket ball. She has managed to score 32 baskets in...

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  14. During school hours, Neha finished 73% of her homework and Minakshi co...

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  15. Rain forests are home to 90,000 of the 2,50,000 identified plant speci...

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  16. Madhu’s room measures 6m × 3m. Her carpet covers 8m2. What per cent of...

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  17. The human body is made up mostly of water. In fact, about 67% of a per...

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  18. The per cent of pure gold in 14 carat gold is about 58.3%. A 14 carat ...

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  19. A student used the proportion (n)/(100)=(5)/(32) to find 5% of 32. Wha...

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  20. The table shows the cost of sunscreen of two brands with and without s...

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