7. the ISL = 5 L es lie 4114 - 00 t...
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7. the ISL = 5 L es lie 4114 - 00 tuu usu. The ratio of A's and B's income last year was 3:4. The ratio of their own income last year to this year is 4 : 5 and 2 : 3 respectively. their present income is Rs. 4160. Find the presents income of A and B. 20.

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( A: B ) 17 Iast yeat income 3: 4 (astyear: Thì yeas A's ratio B "ranto 3 ) ( x 8 ) (xatio of lostyeas ( therefore ) present ratio ( =15: 24 ) become 3: 4 [ =5: 8 ] Present to tal income ( =4160 ) ( therefore A^{prime} s ) income ( =frac{5}{1} times 4160 ) ( sqrt{A^{prime} A ln (operatorname{com} e) 1^{3} cdot 00}]{B^{prime} cdot operatorname{incom}(2) 2560} )
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