A. 19
B. 20
C. 21
D. 22
Submitted by: Abdul Sami Bhayo
let her age be x
after 1 year her age will be x+1=2(x-10)
x+1=2x-20
1+20=2x-x
x=21 years
Correct Answer: 21 ✔
Last Updated: February 07, 2020
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