Tag: international system of numeration

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Multiple choice maths numbers international place value system international system of numeration use of commas and comparison and number systems

Thirty one crore fifty-five lakh thirty-two thousand eight hundred in numerals is written as

  1. $31,55,32,800$
  2. $3,01,55,32,800$
  3. $3,15,05,32,800$
  4. $3,15,53,02,800$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In Indian System, the numeral is Thirty one crore, fifty-five lakh thirty-two thousand eight hundred can be written as $31,55,32,800$.

Multiple choice maths numbers international place value system international system of numeration use of commas and comparison and number systems

Kiran had $85$ currency notes in all, some of which were of Rs. $100$ denomination and the remaining of Rs. $50$ denomination. The total amount of all these currency notes was Rs. $5000$. How much amount did she have in the denomination of Rs. $50$?

  1. Rs. $2725$
  2. Rs. $3500$
  3. Rs. $1500$
  4. Rs. $2800$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let $100$ Rs note be $x$ and $50$ Rs note be $y$

Total number of notes =$x+y=85$................(1)
Total amount of these currency notes + $5000=100x+50y$.............(2)
Multiplying equation 1 with $50$
therefore we get $50x+50y=4250$.......(3)
Subtracting equation 3 from equation 2, we get
$50x=750$
$x=15$
Substituting $x=15$ in equation 1, weget $y=70$
Amount in dominnation of $50$ Rs=$70\times 50=3500$