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Популярное Word Problems >

Mark's current age is six less than five times Nico's age. In 15 years, Mark's age will be twice Nico's age. Find their present ages.

Решение

M a r k^{'} s c u rre n t a g e i s s i x l ess t han f i v e t im es N i c o^{'} s a g e . I n 15 ye a rs, M a r k^{'} s a g e w i ll b e tw i ce N i c o^{'} s a g e . F in d t h e i r p rese n t a g es .

Решение

Nico^{'} s age is : 7

Mark^{'} s age is : 29

Шаги решения

Translate the problem into an equation:

5 x - 6 + 15 = 2 (x + 15)

Решите для

x, 5 x - 6 + 15 = 2 (x + 15) : x = 7

Найдите age

Nico^{'} s age is : 7

Mark^{'} s age is : 29

Популярные примеры

7 less than the product of 3 and a number eight more than twice a number is fifty 2 times a number, increased by 8 Boris wants to buy a bond that will mature to 6500 in seven years. How much should he pay for the bond now if it earns interest at a rate of 4% per year, compounded continuously?Bryan opened a savings account and deposited 4,639.00 as principal. The account earns 9% interest, compounded quarterly. What is the balance after 3 years?