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 >

Noy is twice as old as Kris. In eight years, Noy will be 4 years older than kris. Find their present age

解答

N oy i s tw i ce a s o l d a s Kr i s . I n e i g h t ye a rs, N oy w i ll b e 4 ye a rs o l d er t han k r i s . F in d t h e i r p rese n t a g e

解答

Kris^{'} s age is : 4

Noy^{'} s age is : 8

求解步骤

Translate the problem into an equation:

2 x + 8 - 4 = x + 8

求解

x, 2 x + 8 - 4 = x + 8 : x = 4

找到 age

Kris^{'} s age is : 4

Noy^{'} s age is : 8

流行的例子

Use calculus to find the area A of the triangle with the given 顶点. (0,3),(5,-3),(6,4)Show that 1 greater than the sum of the squares of any three consecutive integers is always divisible by 3.Three increased by the product of a number and 6 is greater than-21 In 2 years, Martin wants to buy a bicycle that costs 700.00. If he opens a savings account that earns 13% interest compounded monthly, how much will he have to deposit as principal to have enough money in 2 years to buy the bike?5 more than 2 times a number