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If A and B are in …

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If A and B are in the ratio 4 : 5 and the difference of their squares is 81, what is the value of A?
  • 3 answers

Parvinder Yadav 3 years ago

(5x)²-(4x)²=81 25x²-16x²=81 9x²=81 X²=81/9 X²=9 X=3

Danish Qureshi 3 years, 4 months ago

9

Pratee Sharma 3 years, 5 months ago

9
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