Two percent of Jennie’s skin cells were burned when she escaped from a fire. If 3.9×1010of her skin cells were burned then, how many skin cells were not burned?

Question

Two percent of Jennie’s skin cells were burned when she escaped from a fire. If 3.9×1010of her skin cells were

burned then, how many skin cells were not burned?

Answer 1

2% of X = 3.9 * 10^10

0.02 X = 3.9*10^10

2x = 3.9*10^12

x = 1.95 * 10^12

1,950,000,000,000

one trillion 950 billion