Current asset section from the Mondelez balance sheet. $ millions

Cash and cash equivalents...........................................................................................$1,870                $1,631

Trade receivables (net of allowances of $54 at 2015 and $66 at 2014...........2,634                 3,802

Other receivables (net of allowances of $109 at 2015 and $91 at 2014...........1,212                 949

Inventories, net......................................................................................................................2,609                3,480

Deferred income taxes..........................................................................................................  --                   480

Other current assets............................................................................................................633                    1,408

Total current assets...........................................................................................................$8,958                $11,750

a.      Compute the gross amount of trade receivable for both 2015 and 2014. Compute the percentage of the allowance for uncollectible trade relative to the gross amount of trade receivable for each of those years.

b.      Compute the relative size of net trade receivable to total assets; the latter were $62,843 million and $66,771 million for 2015 and 2014, respectively. Interpret the quality of Mondelez's receivables for 2015 compared with 2014.