Question Number 176610 by MASANJAJJ last updated on 23/Sep/22
Answered by BaliramKumar last updated on 23/Sep/22
$$\left({i}\right)\:\frac{\mathrm{3}×\mathrm{4}}{\mathrm{3}+\mathrm{4}}\:=\:\frac{\mathrm{12}}{\mathrm{7}}\:=\:\mathrm{1}\frac{\mathrm{5}}{\mathrm{7}}\:{hour} \\ $$$$\left({ii}\right)\:\frac{\mathrm{1}}{\frac{\mathrm{1}}{\mathrm{3}}+\frac{\mathrm{1}}{\mathrm{4}}−\frac{\mathrm{1}}{\mathrm{6}}}\:=\:\frac{\mathrm{1}}{\frac{\mathrm{4}+\mathrm{3}−\mathrm{2}}{\mathrm{12}}}\:=\:\frac{\mathrm{1}}{\frac{\mathrm{5}}{\mathrm{12}}}\:=\:\frac{\mathrm{12}}{\mathrm{5}}\:=\:\mathrm{2}\frac{\mathrm{2}}{\mathrm{5}}\:=\:\mathrm{2}.\mathrm{4}\:{hour} \\ $$
Commented by Rasheed.Sindhi last updated on 24/Sep/22
$$\mathcal{N}{ot}\:{well}-{explained}! \\ $$$${Only}\:{they}\:{can}\:{understand}\:{who}\:{are} \\ $$$${able}\:{to}\:{solve}\:{themselves}. \\ $$$$\left({I}'{ve}\:{solved}\:\:{and}\:{can}\:{understand}\:{therefore}\right) \\ $$