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Long time photometric monitoring programs of gravitational lens systems areoften carried on using modest equipment. The resolution of such observations islimited and some of the images may remain unresolved. It may be still possibleto find a full set of time delays from such a blended data. We discuss here aparticular but interesting case when we have two light curves that both areblends. A suitable computational algorithm is developed and tested to work withcomputer-generated model light curves. Our method combines both blendedsequences using the hypothetical time delays between the initial components ofthe light curves as free input parameters. The combined curves are thencompared using statistical distance estimation. It occurs that using anassumption of equal magnification ratios between the components of the blends,we can indeed recover the whole set of time delays.

Estimation of time delays from two blended light curves of gravitational lenses