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شائع Word Problems >

The sum of three numbers is 66 . The second number is 3 times the third. The first number is 9 less than the third. What are the numbers?

الحلّ

T h e s u m o f t h ree n u mb ers i s 66 . T h e seco n d n u mb er i s 3 t im es t h e t hi r d . T h e f i rs t n u mb er i s 9 l ess t han t h e t hi r d . Wha t a re t h e n u mb ers ?

الحلّ

The numbers : 6, 45, 15

خطوات الحلّ

Represent the numbers with

x, y, z

:

number 1 : x

number 2 : y

number 3 : z

A.T.Q.:

x + y + z = 66

y = 3 z

x = z - 9

x + y + z = 66, y = 3 z, x = z - 9 : x = 6, y = 45, z = 15

The numbers : 6, 45, 15

أمثلة شائعة

the number increase by 12 is 18 Eli opened a savings account and deposited 500.00 as principal. The account earns 10% interest, compounded quarterly. How much interest will he earn after 5 years?Round your answer to the nearest cent.The product of 36 and the square of a number is equal to 121. What are the numbers Stefan is saving up money to buy a car. Stefan puts 6,000.00 into an account which earns 14% interest, compounded monthly. How much will he have in the account after 7 years?\6148 rate 6% for 9 years annually what is the compound interest?