Answer:
Taji has a total of 56 quarters.
Explanation:
Let x be the number of quarters that Taji has.
Amount in terms of quarter
![=0.25 * x](https://img.qammunity.org/2021/formulas/mathematics/middle-school/brw057du6czmc20dmmfdhj0btng72tefkc.png)
Let y be the number of dimes that Taji has.
Amount in terms of quarter
![=0.10 * y](https://img.qammunity.org/2021/formulas/mathematics/middle-school/y783bkdsq287j98ly7ap1liweg710i9f6x.png)
As per question statement:
![x + y = 98 ...... (1)](https://img.qammunity.org/2021/formulas/mathematics/middle-school/5wajywvckisazzt0ac32l71f6wh2daffih.png)
Total amount is $18.20 as given in the question statement.
![\Rightarrow 18.20 = 0.25 * x + 0.10 * y\\\Rightarrow 25x + 10y = 1820 ...... (2)](https://img.qammunity.org/2021/formulas/mathematics/middle-school/hcd9eiw77zsvw9oegg6hzltlqa3e7eoc5c.png)
Solving equations (1) and (2):
Multiplying equation (1) by 10 and subtracting from equation (2):
![25x + 10y -10x -10y= 1820 - 980\\\Rightarrow 15x = 840\\\Rightarrow x = 56](https://img.qammunity.org/2021/formulas/mathematics/middle-school/pv03xne3hgkkfl09piyx9hcti78mqyplji.png)
x is the number of quarters that Taji has.
So, Taji has a total of 56 quarters.