41. 5% of income of A is equal to 1...
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41. 5% of income of A is equal to 15% of income of B and 10% of income of B is equal to 20% of income of C. If the income of Cis 2000, what is the total income of A, B and C? (1) 14000 (2) 16000 (3) * 18000 (4) 12400

11th - 12th Class
Maths
Solution
201
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( 5 % ) of ( A^{prime} s ) income ( =15 % ) of ( B_{s}^{prime} ) income ( 10 % ) of ( B ) is income ( =20 % ) of ( C^{prime} ) s income Let ( A^{prime} & ) income be ( a^{prime} ) and ( B^{prime} ) sincomebe'b' C's income ( =x^{prime}=frac{2000 mathrm{Rs}}{2} ) 100 [ begin{array}{l} begin{aligned} text { 8) } frac{10}{100} times b &=frac{20}{100} times c b &=2 c b &=4000 text { Rs } frac{5}{100} times a &=frac{15}{3} frac{15}{100} times b a &=3 b=3 times 4000=12000 R end{aligned} end{array} ] ( left.therefore a+b+c=18000 R s / text { option }-k^{3}right) )
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