alleryStart learning →A and B have work rates in ratio 3:2, and A alone needs 20 days. B alone needs
A25 days
B40 days
C30 days
D45 days
Answer & Solution
Correct answer: C. 30 days
Time is inversely proportional to rate, so B needs 20 x 3/2 = 30 days.
Keep practising Ratio and Proportion, Indices and Logarithms
Browse all Ratio and Proportion, Indices and Logarithms questions for CA Foundation, or explore more Quantitative Aptitude topics.
Related questions
If log base x of 64 equals 3, then x equalsThe value of log base 5 of 125 plus log base 2 of 8 isFor positive a and b (not 1), (log base a of b) x (log base b of a) equalsLog of a product xy equalsIf log10 of an integer is 3.78, how many digits does it have?Who published the first set of base-10 logarithms in 1617?Who introduced logarithms in 1614?The base of the natural logarithm is approximately