self Maths Puzzle

Find the ratio in which rice at Rs. 7.20 a kg be mixed with rice at Rs. 5.70 a kg to produce a mixture worth Rs. 6.30 a kg.

A. 1 : 3 B. 2 : 3
C. 3 : 4 D. 4 : 5

Read Solution (Total 1)

ans is 2/3
7.2x+5.7y=6.3(x+y)
so x/y=2/3
12 years agoHelpfull: Yes(3) No(0)

self Other Question

The H.C.F. of 9 , 12 , 18 and 21 is:
10 25 35 40
A.
3
5
B.
252
5
C.
3
1400
D.
63
700
A merchant has 1000 kg of sugar, part of which he sells at 8% profit and the rest at 18% profit. He gains 14% on the whole. The quantity sold at 18% profit is:

A. 400 kg B. 560 kg
C. 600 kg D. 640 kg
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