Q327
A man has in all Rs. 640 in the denominations of one-rupee, five-rupee and ten-rupee notes. The number of each type of notes are equal. What is the total number of notes he has?
A.
150
B.
120
AnswerC.
100
D.
90
Answer: Option B
Solution
Answer: Option B
Solution:
\begin{array}{*{20}{c}}
{}&{{\text{Rs}}{\text{. 1}}}&:&{{\text{Rs}}{\text{. 5}}}&:&{{\text{Rs}}{\text{. 10}}}&{} \\
{{\text{Number of notes}}}&1&:&1&:&1&{} \\
{}&x&:&x&:&x&{ = \boxed{3x}{\text{ number of notes}}} \\
{{\text{So, Value}}}&x&:&{5x}&:&{10x}&{ = \boxed{16x}{\text{ value of notes}}}
\end{array}