In a colored picture of blue and yellow color, blue and yellow color is used in the ratio of 4 : 3 respectively. If in upper half ratio of blue and yellow color is 2 : 3, then find that ratio in the lower half.
Answer & explanation
Correct answer: option 2
Blue : Yellow
Full picture: 4 : 3 = 7 (total) .......(i)
Upper Half : 2 : 3 = 5 (total) .......(ii)
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Here, note that the total color (blue + yellow) in upper half and lower half should be same and in full picture total color is twice than the upper/lower half.
So, to make the total of full picture and upper half in the ratio of 2 : 1, multiply (i) by 10 and (ii) by 7:
Blue : Yellow
Full picture: 40 : 30 = 70 (total) .......(iii)
Upper Half : 14 : 21 = 35 (total) .......(iv)
Lower half : 26 : 9 (Full picture - upper half)