Explanation:
Let x be the number of 10 cent coins
Let y be the number of 20 cent coins
given
as equation 1
and
as equation 2.
Now we will use elimination method to solve simultaneous equations.
Now we multiply equation 1 by 0.2 to eliminate y and solve for x first.
Let this new equation be equation 3.
Now use equation 2 + equation 3.
Substitute x into equation 1,
Therefore total number of coins = x + y = 26 + 14 = 40