Question

A mint costs \[\$0.02\] . How much would a roll of \[10\] mints cost?

Answer 1

Hint: We need to go through the chapters like unitary method, Algebra and Multiplications. According to the unitary method, suppose we have the price of \[1\] mint as ‘x’, then we can easily find out the value of ‘y’ units of mint by multiplying ‘x’ with ‘y’. We thus find the value of ‘y’ units of mint as ‘xy’. We need to apply this particular process in this problem to get the answer smoothly.

Complete step by step solution:
Now we start off with the solution to the given problem by writing that,
We have the price of \[1\] mint as \[\$0.02\] , we need to find the price required for \[10\] units of the mint. We can very easily find this value by multiplying the right hand as well as left hand side of the equation by \[10\] . This transformation will turn the left hand side of the equation to \[10\] unit or \[10\] mints. Thus our answer to the problem will be,
 \[=\$0.02\times10\] Which evaluates to \[=\$0.2\]

Note: To solve these types of problems efficiently we need to have a clear cut understanding of algebra and unitary methods. We need to be very careful about where the mint count and the price will be there. If we are given to find the price, then the price would be on the right hand side of the equation and the no of mints on the left hand side. Similarly if we are required to find the number of mints, then the price would be in the left hand side and the mints would be in the right hand side of the equation.