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## Kartik Bhardwaj is teaching live on Unacademy Plus

Kartik Bhardwaj

Executive in PSU ,YouTuber , Motivational speaker,6 year teaching experience, top educator in ECE catagory

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Abhijit Sanyal

3 years ago

Sir,there is a problem I'm facing...if interest rate is 5% or 10% then the answer is not coming.. example--the difference between compound and simple interest on a certain sum for 3years at 5% per annum is ₹122.the sum is...?? Ans. 16000...I'v tried to solve this problem through your method..but the answer is not coming.... please sir give a kind attention on this problem

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RaVaN La

3 years ago

5%= 1/20 then 20 cube because for 3 years ..if two years then square

Up board

a year ago

sir jo aapne solution kiya hai 1st method se to mujhe thoda confusion ho raha hai k equal mass bola hai to ham direct dono ko kyo mila k answer kar rahe hai

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Up board

a year ago

sir question me equal mass milane k liye bola hai to aap direct dono ko mila diye
thoda confusion hora hai please help me sir

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Kartik Bhardwaj

a year ago

please mention thetime pd.of videowith query

Nmk Hdk

a year ago

In your first solution the final ratio is written as 7:10 which may be confusing as actual answer is 7:13

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Kartik Bhardwaj

a year ago

hehehe apne 5 times same question put kiya h..

Nmk Hdk

a year ago

Due to network issues 😅

Nmk Hdk

a year ago

In your first solution the final ratio is written as 7:10 which may be confusing as actual answer is 7:13

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Nmk Hdk

a year ago

In your first solution the final ratio is written as 7:10 which may be confusing as actual answer is 7:13

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Q.7 Two alloys A and B contain gold and copper in the ratios of 2:3 and 3:7 by mass, respectively. Equal masses of alloys A and B are melted to make an alloy C. The ratio of gold to copper in alloy C is (A) 5:10 (B) 7:13 (D) 9:13 Options 1. A 2. B 3. C 4. D Scanned by CamScanner

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