Jamal has already $39 with him, so he needs another $195.10 ( $234.10 - $39) to buy the Playstation.

Jamal can save $4 every week. Since his aunt will contribute $3 for every $ saved by Jamal, she would contribute $12 every week. Thus Jamal would have $16 with him every week. Thus starting with Saturday the 1^st April, there would be 4 weeks in April and 4 weeks in May and 4 weeks in June, which will make up a total of 12 weeks and the amount raised would be 12x16 = $192,

This 12 week period(84 days) would be completed on Friday, the 23 rd June ( 30 days of April, 31 days of May and 23 days of June). Next day he would save another $4 raising the total amount to $196, which would be enough to buy the Playstation on Saturday the 24^th June.

If J is amount in $ saved by Jamal every week and A is the amount in $ contributed by his aunt and T is the number of weeks to make up $192, then

A = 3J

[A+J] T= 192

4JT= 192

Since J=4 , T=12 weeks

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