 
<translate> Lyka aghaghị ichekwa ngụkọta nke $160 - $40 = $120 ruo ọnwa abụọ. E nwere 2 x 4 = izu 8 n'ime ọnwa abụọ. N'ihi ya, ọ dị Lyka mkpa ichekwa $120 / 8 = $15 kwa izu. Ya mere, azịza ya bụ 15. <eng> Lyka has to save a total of $160 - $40 = $120 for two months. There are 2 x 4 = 8 weeks in two months. Hence, Lyka needs to save $120 / 8 = $15 per week. So, the answer is 15. 