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شائع Word Problems >

When a number is decreased by 19%, the result is 66. What is the original number to the nearest tenth?

الحلّ

Wh e n a n u mb er i s d ecre a se d b y 19%, t h e res u lt i s 66. Wha t i s t h e or i g ina l n u mb er t o t h e n e a res t t e n t h ?

الحلّ

Amount before reduction : 81.48148 \dots

خطوات الحلّ

Translate the problem into an equation:

66 = x - 0.19 x

66 = x - 0.19 x : x = \frac{2200}{27}

\frac{2200}{27} = 81.48148 \dots

Amount before reduction : 81.48148 \dots

أمثلة شائعة

The sum of two numbers is 31. The sum of the smaller and 2 times the larger is 48. Find the numbers.Three times the sum of a number and 9 is 2.1 less than twice a number.the difference between 5 times a number and 4 is 16 Carly inherited some money from her grandfather and put it in a bank account that earns 11% interest compounded monthly. After 8 years, Carly had 1,000.00 in the bank account. How much interest did she earn?