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Phổ biến Word Problems >

If i am currently 20 years old and my sister is half my age, how old will my sister be when i'm 30

Lời Giải

I f i am c u rre n tl y 20 ye a rs o l d an d m y s i s t er i s ha l f m y a g e, h o w o l d w i ll m y s i s t er b e w h e n i^{'} m 30

Lời Giải

Siste r^{'} s age in 30 years : 40

Plug in to find h o w o l d w i ll m y s i s t er b e w h e n i^{'} m 30

Các bước giải pháp

me : 20

Sister : \frac{1}{2} \cdot 20

\frac{1}{2} \cdot 20 + 30 = 40

Siste r^{'} s age in 30 years : 40

Plug in to find h o w o l d w i ll m y s i s t er b e w h e n i^{'} m 30

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