Jess Lim's answer to shipra garg's Primary 5 Maths Rate & Ratio question.

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Jess Lim
Jess Lim's answer
9 answers (A Helpful Person)
1st
Because when he buys 40, he has $5 left. When he buys 50, he needs another $15.
So 10 doughnuts costs $20.
shipra garg
Shipra Garg
6 years ago
Thanks a lot