Please show oyur work

Suppose the quote on pounds is $1.624-1.631 (bid-ask). If you converted $10,000 to pounds and then back to dollars, how many dollars would you end up with?

a. $9,957.09 b. $6,157.64 c. $10,000 d. $10,043

e. $9,688.44

Suppose the quote for sterling in American terms in New York is 1.3110-1.3115. Then the quote for dollars in European terms in London is:

a. 2.6220-2.6230 b. .7625-.7628 c. 1.3115-1.3110 d. .7110-.7115 e. .7628-.7625