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Mrs. payne needs 35 notepads she can buy them in packs of 10 no pads or a single pads what are all the different ways Mrs. painting by the notepads find a pattern to solve

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disney3499
Well she can buy 4 of the ten packs though that would give her five extra, she could buy 35 single note pads which would give her the exact amount, or she could buy 3 of the ten packs and 5 of the singles. 
Even you need anymore help let me know I will try my best.

Number of Notepads that Mrs Payne needs to buy=35

She can buy them in a pack of 10 or in Single Pads.

Number of Different Ways by which Mrs.Wayne can buy 35 Notepads

      A  =10 × 3 +1 × 5

      B  =10 × 2 +1 × 15

      C  =10×1 +1×25

      D  =1×35

=4 Ways