4. Jeremy saves Php 2 in the first week,Php 3 in the second week and so on, increasing Php 1 each week for 30 weeks. How much did he save after 30 weeks? a. Php 480 b. Php 495 c. Php 505 d. Php 525
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─ Answer
b. Php 495
─ Explanation
uhm, not really exact explanation but this is how i did it po!
n+1 : n (where in the week is n)
going up to 30 weeks, the php to week ratio goes to 31:30..
adding up all the values from the numbers 2-31, you get php 495.
─ Note
did this help? aori hopes it did! any kind of response/feedback is welcome. :D