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Ratio and Proportion 1/2

9. If $18:x = x:8$, then $x$ is equal to :
a. 144
c. 72
c. 26
d. 12


10. If $a:b=c:d$, then $\displaystyle\frac{{ma + nc}}{{mb + nd}}$ is equal to
a. m : n
b. na:mb
c. a : b
d. md:nc


11. Rs.1050 is divided among P, Q and R. The share of P is $\displaystyle\frac{2}{5}$ of the combined share of Q and R. Thus, P gets:
a. Rs.200
b. Rs.300
c. Rs.320
d. Rs.420


12. If Rs.600 is divided among $A, B, C$ in the ratio 2 : 3 : 5, find the share of $C$
a. Rs.280
b. Rs.300
c. Rs.170
d. Rs.200


13. If Rs.600 is divided among $A, B, C$ in the ratio 2 : 3 : 5, find how much more $C$ will get than the share of $B$
a. Rs.280
b. Rs.300
c. Rs.170
d. Rs.200


14. Rs.1060 is divided into three parts in such a way that half of the first part, one-third of the second part and one-fifth of the third part are in the ratio 4 : 5 : 6. Find the second part.
a. Rs.600
b. Rs.400
c. Rs.300
d. Rs.180


15. The incomes of A and B are in the ratio 5 : 4 and their expenses are in the ratio 7 : 3. If each saves Rs.1300, then find the income of A.
a. 144
c. 72
c. 26
d. 12


16. The ratio of money with Ram and Gopal is 7:17 and that with Gopal and Krishna is 7:17 . If Ram has Rs.490, Krishna has :
a. Rs.2890
b. Rs.2330
c. Rs.1190
d. Rs.2680


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