the respective ratio between two numbers is 4:7. If 4 is added to each of the two numbers their respective ratio is 3:5. what is the largest number.
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Step-by-step explanation:
let the ratio be 4x and 7x
after adding 4 ,
the ratio becomes =3:5
then,
A/Q
(4x+4)/(5x+4)=3/5
5(4x+4)=3(5x+4) [by cross multiple]
20x+20=15x+12
20x-15x=12-20
5x=-8
x=-8/5
largest no. =-8/5*4=-32/5
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