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شائع Word Problems >

Two numbers are in a ratio of 7:3. One third of their sum is 30. Find the numbers

الحلّ

Tw o n u mb ers a re in a r a t i o o f 7 : 3. O n e t hi r d o f t h e i r s u m i s 30. F in d t h e n u mb ers

الحلّ

The numbers : 63, 27

خطوات الحلّ

Represent the numbers in ratio 7:3 with

x

7 x

3 x

Write an equation for the sum:

\frac{1}{3} (7 x + 3 x) = 30

\frac{1}{3} (7 x + 3 x) = 30, x

حلّ لـ:

x = 9

7 x = 7 \cdot 9 = 63

3 x = 3 \cdot 9 = 27

The numbers : 63, 27

أمثلة شائعة

In 2 years, Hassan wants to buy a bicycle that costs 400.00. If he opens a savings account that earns 14% interest compounded annually, how much will he have to deposit as principal to have enough money in 2 years to buy the bike?6 is 40% of what number?900 are deposited in an account with 7%interest rate, compounded continuously.What is the balance after 6 years?if you invest 2600 at 3% interest per year how much will you have all together after 2 years 45 is 60% of what amount accurate to the cent.