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Phổ biến Word Problems >

mary is 5 years older than lily. if the sum of their ages together is 51, what are their ages?

Lời Giải

ma ry i s 5 ye a rs o l d er t han l i l y . i f t h e s u m o f t h e i r a g es t o g e t h er i s 51, w ha t a re t h e i r a g es ?

Lời Giải

Mary^{'} s age is : 28

Lily^{'} s age is : 23

Các bước giải pháp

Translate the problem into an equation:

x + x - 5 = 51

Giải

x, x + x - 5 = 51 : x = 28

Tìm age

Mary^{'} s age is : 28

Lily^{'} s age is : 23

Ví dụ phổ biến

6 is 15% of what number Tony's age is 28 years older than Mack. 5 years ago, Tony was 5 times as old as Mack. Find their present ages.Dana opened a savings account and deposited 400.00. The account earns 15% interest, compounded annually. If she wants to use the money to buy a new bicycle in 2 years, how much will she be able to spend on the bike?500 is 40 percent of what number a number x is at most 3