Three percent of Jennie’s skin cells were burned when she escaped from a fire. If 3.7*10^10 of her skin cells were burned then, how many skin cells were not burned ?

Question

Three percent of Jennie’s skin cells were burned when she escaped from a fire. If 3.7*10^10 of her skin cells were burned then, how many skin cells were not burned ?

Answer 1

3% of X = 3.7 * 10^10

0.03X = 3.7*10^10

3X = 3.7*10^12

X = 1.23 * 10^12

97% remain, so

0.97 * 1.23 * 10^12 = 1.1963 * 10^12