ko

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

인기 있는 Word Problems >

mother is twice as old as her daughter now,:but 10 years ago, she was 3 times as old as her:daughter. Find their ages at present.

해법

m o t h er i s tw i ce a s o l d a s h er d a ug h t er n o w, : b u t 10 ye a rs a g o, s h e w a s 3 t im es a s o l d a s h er : d a ug h t er . F in d t h e i r a g es a t p rese n t .

해법

Daughter^{'} s age is : 20

Mother^{'} s age is : 40

솔루션 단계

Translate the problem into an equation:

2 x - 10 = 3 (x - 10)

x

해결 대상

, 2 x - 10 = 3 (x - 10) : x = 20

age 찾다

Daughter^{'} s age is : 20

Mother^{'} s age is : 40

인기 있는 예

을 위해 해결하다 The sum of 3 times a number and 5 is equal to 9.Darrell opened a savings account and deposited 600.00 as principal. The account earns 13% interest, compounded annually. What is the balance after 7 years?Madelyn opened a savings account and deposited 2,000.00 as principal. The account earns 3% interest, compounded quarterly. What is the balance after 5 years?the sum of two consecutive odd integers is-120 Diane is saving up money to buy a car. Diane puts 9,308.00 into an account which earns 12% interest, compounded quarterly. How much will she have in the account after 4 years?