vi

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Phổ biến Word Problems >

The sum of three numbers is 149. The third number is 4 times the second. The first number is 5 more than the second. What are the numbers?

Lời Giải

T h e s u m o f t h ree n u mb ers i s 149. T h e t hi r d n u mb er i s 4 t im es t h e seco n d . T h e f i rs t n u mb er i s 5 m ore t han t h e seco n d . Wha t a re t h e n u mb ers ?

Lời Giải

The numbers : 29, 24, 96

Các bước giải pháp

Represent the numbers with

x, y, z

:

number 1 : x

number 2 : y

number 3 : z

A.T.Q.:

x + y + z = 149

z = 4 y

x = 5 + y

x + y + z = 149, z = 4 y, x = 5 + y : x = 29, y = 24, z = 96

The numbers : 29, 24, 96

Ví dụ phổ biến

61 decreased by twice a number Christine opened a savings account and deposited 100.00. The account earns 1% interest, compounded monthly. If she wants to use the money to buy a new bicycle in 3 years, how much will she be able to spend on the bike?300% of what number is 51 This summer, due to some renovations, a sports club has 63 members. The club's records indicate that this is 25% fewer members than it had last summer. How many members were there last summer?Jamie placed 2,800 in a savings account which earns 4.3% interest, compounded annually. How much will she have in the account after 13 years?