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 population of a city decreases by 4% per year. If this year's population is 291,000, what will next year's population be, to the nearest individual?

Lời Giải

T h e p o p u l a t i o n o f a c i t y d ecre a ses b y 4% p er ye a r . I f t hi s ye a r^{'} s p o p u l a t i o n i s 291, 000, w ha t w i ll n e x t ye a r^{'} s p o p u l a t i o n b e, t o t h e n e a res t in d i v i d u a l ?

Lời Giải

Amount after reduction : 279360

Các bước giải pháp

Translate the problem into an equation:

x = 291000 - 0.04 \cdot 291000

x = 291000 - 0.04 \cdot 291000 : x = 279360

Amount after reduction : 279360

Ví dụ phổ biến

Some number times −7 is equal to the number increased by −15 Find the length of the diagonal of a square that has an diện tích of 12cm^2 The compound interest formula is given by where is the accumulated amount, after an initial investment of dollars is invested for years, at annual interest rate , compounded times per year.Use the formula above to determine how long it will take an initial investment of 12,750 to grow to 36,975, if the account earns 11.5% interest per year, compounded quarterly. Round the solution to two decimal places.Dakota opened a savings account and deposited 1,623.00 as principal. The account earns 14% interest, compounded monthly. What is the balance after 3 years?Zack puts 500.00 into an account to use for school expenses. The account earns 12% interest, compounded annually. How much will be in the account after 10 years?