zs

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

受欢迎的 Word Problems >

Susan is twice as old as Luna. The sum of their ages 4 years ago was 37. Find how old they are now.

解答

S u s an i s tw i ce a s o l d a s Lu na . T h e s u m o f t h e i r a g es 4 ye a rs a g o w a s 37. F in d h o w o l d t h ey a re n o w .

解答

Luna^{'} s age is : 15

Susan^{'} s age is : 30

求解步骤

Translate the problem into an equation:

2 x - 4 + x - 4 = 37

求解

x, 2 x - 4 + x - 4 = 37 : x = 15

找到 age

Luna^{'} s age is : 15

Susan^{'} s age is : 30

流行的例子

The sum of five consecutive even integers is 120120. What is the largest integer?Find two consecutive whole numbers that lies between sqrt(53)A merry go round has a circular platform with a 直径 of 2 yards. What is the platform's area?the sum of two numbers is 35. twice the smaller decreased by the larger is 10.You deposit 16000 in an account earning 9% interest compounded monthly. How much will you have in the account in 1 years?