Question

Jessica has $300 saved in an account. Tai has

$400 saved in an account. Jessica starts
saving $20 per month, while Tai saves $12
per month. At what time will they have the
same amount?

Answer 1

12.5 months

Explanation:

Let x be the number of months

Let f(n) be the money saved by person n

we know that f(J)=300+20m

we also know that f(T)=400+12m

we want f(J)=f(T) so we have 300+20m=400+12m. solving we get 8m=100 and so m=12.5. Thus in 12.5 months they will have the same amount.