Molemi o tsaya mashi a dilithara di le 5 ka letsatsi mo kgomong. Ka fa a na le dikgomo di le 3, o tlhoka dikgomo di le kae gape gore a kgone go tsaya mashi a dilithara di le 25 ka letsatsi?

Erika is saving for a new laptop. The laptop she wants costs $600. The sales assistant told her that if she traded in her old laptop, the price of the new one would be reduced by $200. She thinks this is a good deal and agrees to do it. She already has some savings in her purse, and has also been paid $150 this week for her part-time job. Her mom agrees to give her $80 to help her. If Erika now only needs an extra $50 to buy the laptop, how much money does she have in her purse?
O tsaya mashi a 5*3=<<5*3=15>>15 ka letsatsi.
O tshwanetse go oketsa ka dilithara di le 25-15=<<25-15=10>>10 ka letsatsi.
Go dira seo, o tlhoka dikgomo tse dingwe gape di le 10/5=<<10/5=2>>2.
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Selling the old laptop reduced the cost of the new laptop to $600 – $200 = $<<600-200=400>>400 dollars.
We know she doesn't have all the money yet, so she actually has $400 – $50 = $<<400-50=350>>350 dollars.
Some of this money came from her mom, so the money she had herself was $350 – $80 = $<<350-80=270>>270.
Subtracting her part-time wages shows that she had $270 – $150 = $<<270-150=120>>120 in her purse.
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