Question

How many rupees do they make from 20 notes of 1000 rupees, 5 notes of 100 rupees and 14 notes of 10 rupees.

Answer 1

Hint: First, we will multiply 20 notes with 1000, rupees 5 notes with 100 rupees and 14 notes with 10 rupees and then we will add these three values to find the total amount they made.

Complete step-by-step answer:
We are given that there are 20 notes of 1000 rupees, 5 notes of 100 rupees and 14 notes of 10 rupees.
Since we have 20 rupees of 1000 rupees, so we will multiply 20 with 1000 to find the rupees made by it, we get
\[
   \Rightarrow 20 \times 1000 \\
   \Rightarrow 20000{\text{ ......(1)}} \\
 \]
For 5 rupees of 100 rupees, so we will multiply 5 with 100 to find the rupees made by it, we get
\[
   \Rightarrow 5 \times 100 \\
   \Rightarrow 500{\text{ ......(2)}} \\
 \]
We also have 14 rupees of 10 rupees, so we will multiply 14 with 10 to find the rupees made by it, we get
\[
   \Rightarrow 14 \times 10 \\
   \Rightarrow 140{\text{ ......(3)}} \\
 \]
Adding the equation (1), equation (2) and equation (3) to compute the total rupees they made, we get
\[
   \Rightarrow 20000 + 500 + 140 \\
   \Rightarrow 20640 \\
 \]

Note: In these types of questions, the key concept is to multiply the number of notes with the amount of rupees. This is a really simple problem. We should take care of calculations and avoid silly mistakes.