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Phổ biến Word Problems >

Sandy is four times as old as her friend, Peter. In 16 years time Sandy will be twice as old as Peter.What are there present ages

Lời Giải

S an d y i s f o u r t im es a s o l d a s h er f r i e n d, P e t er . I n 16 ye a rs t im e S an d y w i ll b e tw i ce a s o l d a s P e t er . Wha t a re t h ere p rese n t a g es

Lời Giải

Peter^{'} s age is : 8

Sandy^{'} s age is : 32

Các bước giải pháp

Translate the problem into an equation:

4 x + 16 = 2 (x + 16)

Giải

x, 4 x + 16 = 2 (x + 16) : x = 8

Tìm age

Peter^{'} s age is : 8

Sandy^{'} s age is : 32

Ví dụ phổ biến

The sum of three consecutive integers is-126 What is the integers 8thừa số the number Patrick deposited 8,000.00 into a new savings account that earns interest compounded quarterly. After 7 years, the balance in the account was 15,300.00. What was the interest rate on the account?Round your answer to the nearest tenth of a percent.There are 5 consecutive integers with a sum of-470. What is the value of the least integer?Suppose that 7000 is placed in an account that pays 3% interest compounded each year.Assume that no withdrawals are made from the account. Do not do any rounding. Find the amount in the account at the end of 2 years.