7+16 *2= a
16*2= 32 + 7 = 39
a = 39
Angela is twice as old as clara. Seven years ago, the sum of their ages was 16. How old is clara now?
3 answers
a = 2 c
a-7 + c-7 = 16
2 c + c - 14 = 16
3c = 30
c = 10
a-7 + c-7 = 16
2 c + c - 14 = 16
3c = 30
c = 10
Hmm be sure to put the numbers back in to check.
a = 20 and c = 10
13 + 3 = 16
a = 20 and c = 10
13 + 3 = 16
1 answer