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Answer :
The outermost part of the flame is the hottest zone of the flame as it undergoes complete combustion, so the container placed in this zone gets heated first. This part of flame is called as non-luminous flame.
The wick in the yellow part of the flame is the least hot zone, so it takes comparatively more time to heat the container. This part of flame is called as luminous flame.
Hence the beaker filled with water, placed in the outermost part of the flame will be heated faster. So Ramesh’s water will get heated in a short time. However, Abida's beaker filled with water will be comparatively less hot.