MATIHEMATICS

NAMEABIR CHANDA QUALIFICATION : B.Sc HONS IN COMPUTER APPLICATION PROFESSION: TEACHER HOBBIES: READING SINGING, LISTNING MUSIC, PLAYING

WHAT WE LEARN ??? 11. Data Interpretation 12. Number System 13. Average 1. Fast Calculation Tricks 2. Ratio & Proportion 3. Percentage 4. Profit & Loss 5. Time and Work 6. Pipe & Cistern 7. Simple Interest 8. Compound Interest 9. Mixture 10.Time Speed and Distance

RATIO PROPORTION 4

1) In an ornament the ratio of gold and copper is 3 : 2. The percentage of gold in the ornament is? [CGL 2016] Gold: Copper 3:2 Gold100 * (3/5) 203 60%

2) There is a ratio of 5 : 4 between two numbers. If 40% of the first is 12, then 50% of the second number is ? [CGL Tire-2 2012] 1st : 2nd = 5 : 4 5x *(40 100)12 12 * 100 40 * 5 50% of 2nd No-12

3) The ratio of the present age of two brothers is 1:2 and 5 years back the ratio was 1: 3. What will be the [CGL 2005] Present age of two brothers ratio of their age after 5 years? 2 2 3 1st 2* 5 10 5 years after their age will be 1st10+5 15 2 2 4 3 1st: 2nd15: 25 3:5

The ratio between Sumit's and Prakash's age at present is 2: 3. Sumit is 6 years younger than Prakash. The ratio of Sumit's age to Prakash's age after 6 years will be? CHSL 2012] Comment your answer. I will be waiting for your answer.

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Abir Chanda

I have done my graduation in Computer Application (Hons). I have teaching experience more than 5 years. My hobbies are reading, solving puzz

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Arjumand Rashid

7 months ago

nice lecture sir ..thank you

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Chiranjit Naiya

9 months ago

Sujit and prokash ratio after 6 year will be 3:4

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Abir Chanda

9 months ago

thank you for your participation...

Mukta Khatun

7 months ago

3:4

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Anupam MONDAL

9 months ago

3:4

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Abir Chanda

9 months ago

thank you for your participation...