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Phổ biến Word Problems >

mary is 6 years older than her sister kelly. the sum of their ages is 48. how old is kelly

Lời Giải

ma ry i s 6 ye a rs o l d er t han h er s i s t er k e ll y . t h e s u m o f t h e i r a g es i s 48. h o w o l d i s k e ll y

Lời Giải

Kelly^{'} s age is : 21

Các bước giải pháp

Translate the problem into an equation:

x + x - 6 = 48

Giải

x, x + x - 6 = 48 : x = 27

Tìm Kelly's age

: 21

Kelly^{'} s age is : 21

Ví dụ phổ biến

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