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Phổ biến Word Problems >

A woman can bicycle 78 miles in the same time as it takes her to walk 18 miles. She can ride 10 mph faster than she can walk. How fast can she walk?

Lời Giải

A w o man c an bi cyc l e 78 mi l es in t h e s am e t im e a s i t t ak es h er t o w a l k 18 mi l es . S h e c an r i d e 10 m p h f a s t er t han s h e c an w a l k . Ho w f a s t c an s h e w a l k ?

Lời Giải

walking speed : 3

Các bước giải pháp

Translate the problem into an equation:

\frac{78}{x + 10} = \frac{18}{x}

Giải

x, \frac{78}{x + 10} = \frac{18}{x} : x = 3

walking speed : 3

Ví dụ phổ biến

Destiny opened a savings account and deposited 700.00 as principal. The account earns 11% interest, compounded quarterly. What is the balance after 3 years?A number when doubled results in a number that is 5 more than the original number.a number that when decreased by 30% is 40 the sum of 2 times a number and 7 is equal to 9 The sum of three numbers is 15. The sum of twice the first number, 5 times the second number, and 6 times the third number is 56. The hiệu between 5 times the first number and the second number is 29. Find the three numbers.