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Ok, let's say 150 is 100%

10 percent would be 15 as it is 1/10 another 10 percent would be 30 or 2/10

50% would be 75 which is half or 5/10

Add them together and you get 105 or 7/10 or 70% of 150.

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12y ago

What else can I help you with?