If the cost of 1 pencil is Rs. x , then the cost of 10 pencils is

Q. The cost of one pencil is Rs. $1.50$, then the cost of $10$ pencils is -

Q. If $7$ pencils cost $Rs.35$, then the cost of one dozen pencils is

Q. Fill in the blanks.
If the cost of $10$ pencils is $Rs.15$, then the cost of $6$ pencils is ____ .

Q. The cost of $1$ pencil and $3$ erasers is $Rs10$ and cost of $4$ pencils and $6$ erasers is $Rs28$. Find the cost of $5$ pencils and $4$ erasers.

Q. Cost of 1 pencil is Rs. 18 The cost of 8 pencils is____