दो संख्या योगफल 81 है और उनका अनुपात 4:5 है तो संख्या ज्ञात करे?
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let be the numbers are 4x,5x
according to the question
4x +5x=81
9x=81
x=81÷9=9
So the 1st no. is 4x= 4×9=36
2nd no. is 5x=5×9=45
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