A liter of water weighs a kilogram so 15 mg/kg = 15 ppm on a mass over mass basis. If that is the flavor of ppm you want, done. But ppm can also be computed on a volume basis, molar ratio, etc. It is better tio use a clear form with units that identifies the basis such as mg/kg.
Serena Williams knocked off Lucie Safarova in the final of the women's draw at the French Open, and Bovada has her listed as the clear favorite on the odds to win Wimbledon this year; Williams sits as the 7/4 chalk on those betting lines.
Virginia Wade was the last British tennis player to win Wimbledon, winning the Ladies Singles title in the tournamentâs centenary year. Throughout her long and successful career she won three Grand Slam singles titles and four Grand Slam doubles titles but winning Wimbledon in 1977 was the pinnacle of her career.