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primary 6 | Maths
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Jai
Jai

primary 6 chevron_right Maths chevron_right Singapore

I need help and explanation, thanks in advance

Date Posted: 3 years ago
Views: 189

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Zhe Xun
Zhe Xun's answer
113 answers (Tutor Details)
1st
Feel free to ask if you still have questions
Jai
Jai
3 years ago
why did you do 70 - 50 and divide by 2
Jai
Jai
3 years ago
Could you explain thoroughly
Zhe Xun
Zhe Xun
3 years ago
70-50 is the cookie difference from the first day and last day.

As cindy gives 2 more cookies away everyday, so we divide the total cookie diff(20) by the daily cookie diff(2) to find out the number of days
Jai
Jai
3 years ago
why did you do 70 + 10 then multiply by 3
Jai
Jai
3 years ago
could you also explain for the first part on the how many cookies rina had more the cindy
Zhe Xun
Zhe Xun
3 years ago
To get the original amt of cookies, we get Cookies left (70) + cookies she gave away, 10 days x cookies she gave away each day(3)
Zhe Xun
Zhe Xun
3 years ago
At the start rina and cindy both baked a different amount of cookies, but rina made 50 more cookies than cindy