Answer: Leon has 18 dimes in all.
Step-by-step explanation:
1) We need to find the number of dimes Leon have
2) Since we have given that
Number of quarter Leon has = 34
3) What conditions we have to calculate :
According to question, Leon has 16 fewer quarters than dimes.
4) how we will calculate :
Number of dimes is given by

5) What we get :
Hence, Leon has 18 dimes in all.