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Phổ biến Word Problems >

Rowell's age is triple Leur's age right now. In 12 years, Rowell's age will only be double of Leur's age then. How old is Rowell now?

Lời Giải

R o w e l l^{'} s a g e i s t r i pl e L e u r^{'} s a g e r i g h t n o w . I n 12 ye a rs, R o w e l l^{'} s a g e w i ll o n l y b e d o u b l e o f L e u r^{'} s a g e t h e n . Ho w o l d i s R o w e ll n o w ?

Lời Giải

Rowell^{'} s age is : 36

Các bước giải pháp

Translate the problem into an equation:

3 x + 12 = 2 (x + 12)

Giải

x, 3 x + 12 = 2 (x + 12) : x = 12

Tìm Rowell's age

: 36

Rowell^{'} s age is : 36

Ví dụ phổ biến

Samantha is going to invest in an account paying an interest rate of 6.4% compounded monthly. How much would Samantha need to invest, to the nearest dollar, for the value of the account to reach 2,130 in 12 years?eight times a number plus 3 times the number is the same as 9 more than 12 times the number 14 less than a number you deposit 5000 in an account that pays 2.25% annual interest. Find the balance after 5 years when the interest is compounded quarterly. Round your answer to the nearest cent.Find the time required for an investment of 5000 dollars to grow to 6200 dollars at an interest rate of 7.5 percent per year, compounded quarterly. Round your answer to 2 decimal places. Your answer is t= years. Question Help: Message instructor