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Mathematics 24 Online
OpenStudy (anonymous):

At an exam the full marks were 1000. A got 10% less than B, B 25% more than C and C 20% less than D. If A got 720, what percentage of full marks was got by D?

OpenStudy (anonymous):

A = 720 A = 0.9B B = 1.25C C = 0.8D solve

OpenStudy (anonymous):

d=80% .

OpenStudy (anonymous):

bingo

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