# math correct or not?

posted by
**Lilly**
.

1. 19 is what percent of 40

a. 19=n x 40;47.5%

b. 40=19 x n;2.1%

c. 40=19 x n;40.4%

d. 19=n x 40;52.3%

is it a?

2.64 is 80% of what?

a.64 x n=80; 0.8

b.0.64 x n=80; 125

c.60= 0.80 x n;80

d.80=64 x n;1.3

is it c?