Question

during a marathon race an athlete loses 2% of his mass
at the end of the race his mass is 67.13kg
calculate his mass before the race.

Answer 1

Step-by-step explanation:

67.13 + ( 2% * 67.13 )

67.13 + 1.34

68.47 kg - mass before the race

Answer 2

Answer:

68.5

Step-by-step explanation:

ORIGINAL MASS x 98/100 = 67.13 kg

x/1 x 98/100 = 67.13 kg

98x/100 = 67.13 kg

98x = 67.13 kg x 100

98x = 6713

x = 6713/98

x = 68.5