??????????????? nonnoed variabels ??????????????
yer quesshun is bou werk rate wen 2+ werkers werk in parallel
yu add tugether the rate tu get total rate, then find time=(how much)/rate
rate1=1/6, rate2=1/8
rate=(1/6) +(1/8) =(4/24) +(3/24)=7/24=0.29166666666...
time tu paent the dang-thang=1/0.291666=3.4285714, or bout 3 & 1/2 ours