book Maths Puzzle Numerical Ability

can you please solve for r in the formula S = L - Lr

Read Solution (Total 0)

book Other Question

Jeff leaves his house on his bicycle at 8:30 A.M. and averages 5 miles per hour. His wife, Joan, leaves at 9:00 A.M. following the same path and averaging 8 miles per hour. At what time will Joan catch up with Jeff? In 1999, cigarette consumption in the US was 125 packs per capita. This rate of consumption was 5/8 of what it was in 1980. Find the rate of consumption in 1980.