Lyka wants to buy a smartphone worth $160 but she only has $40 at the moment. She plans to save an equal amount of money per week for two months for the remaining amount that she needs. How much should she save per week?
Lyka has to save a total of $160 - $40 = $
<gadget id="calculator">160-40</gadget>
<output>120</output>
120 for two months.
There are 2 x 4 = 
<gadget id="calculator">2*4</gadget>
<output>8</output>
8 weeks in two months.
Hence, Lyka needs to save $120/8 = $
<gadget id="calculator">120/8</gadget>
<output>15</output>
15 per week.

<result>15</result>