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The ages of Arohi and Sneha are in the ratio 5:7. Four years later, their will be the ratio 3:4. Find Arohi's age |
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Answer» ONG>ANSWER: let present age of arohi be X present age of sneha be y from condition 1 x/y=5/7 x=5y/7......equation 1 from condition 2 x+4/y+4=3/4 4(x+4)=3(y+4) 4x+16=3y+12 16-12=3y-4x 4=3y-4x from equation 1, substitute the x value 4=3y-4(5y/7) 4=3y- 20y/7 4=21y-20y/7 4=y/7 y=28.....equation 2 from equation 2,substitute the value of y in equation 1 x=5y/7 x=5×28/7 x=20 therefore, present age of arohi is 20yrs present age of sneha is 28yrs hope it HELPS you and don't forget to follow me |
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