To solve this problem, find the total cost of not paying the total amount at the time of the purchase. You do it by adding 200 to the product of 100 and 14.
![200+14\cdot100=1600](https://img.qammunity.org/2023/formulas/mathematics/college/tyyqug7ouq3hds07tsxrodvhqce18t38jr.png)
The amount that is saved if the tv is paid at the time of the purchase is the difference between both costs:
![1600-900=700](https://img.qammunity.org/2023/formulas/mathematics/college/6nifp4iuyiez1lcxwgdj67oryhtt1mb8a2.png)