Answer :
[tex] \huge \mathfrak \red{HeY \: ThErE♡}[/tex]
Given,
No. of mangoes sid has = 15
No. of apples sera has = 6
Therefore, we gonna add them-,-
Total no. of fruits Sidra will have = 15 + 6 = 21
Therefore,Sidra will have 21 fruits.
[tex] \huge \mathfrak \red{HoPe \: It \: HeLpS♤}[/tex]