RRB RPF RPSF SI and CONS Model Papers 9 with solutions

(1) Ratio of the number of Rs. 10, Rs. 20 and Rs. 50 notes = 1 : 3 : 5
Ratio of their values = 10 : 3 × 20 : 5 × 50
= 10 : 60 : 250
= 1 : 6 : 25
Sum of the terms of ratio = 1 + 6 + 25 = 32
∴ Value of Rs. 20 notes $=\mathrm{Rs}.\left(\frac{6}{32}\times 1920\right)=\mathrm{Rs}.360$
∴ Their number $=\frac{360}{20}=18$