 
 <translate> Loisa will pay a total of $40 x 4 = $160 for the first 4 months. She will pay a total of $35 x 4 = $140 for the next four months. And she will pay a total of $30 x 4 = $120 for the last four months. Thus, she will pay a total of $100 + $160 + $140 + $120 = $520 for 12 months including the down payment. Therefore, Loisa can save $520 - $450 = $70 if she buys the tablet in cash.
Therefore, the answer is 70. <ibo> Loisa ga-akwụ ngụkọta nke $40 x 4 = $160 maka ọnwa 4 mbụ. Ọ ga-akwụ ngụkọta nke $35 x 4 = $140 maka ọnwa anọ na-abịanụ. Ọ ga-akwụkwa ngụkọta nke $30 x 4 = $120 maka ọnwa anọ gara aga. N'ihi ya, ọ ga-akwụ ngụkọta nke $100 + $160 + $140 + $120 = $520 maka ọnwa 12 tinyere ego mbụ e kwụrụ. N'ihi ya, Loisa pụrụ ichekwa $520 - $450 = $70 ma ọ bụrụ na o jiri ego zụta mbadamba ụrọ ahụ. N'ihi ya, azịza ya bụ 70. 