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Phổ biến Word Problems >

Kevin is 2 times as old as Gabriela. 12 years ago, Kevin was 6 times as old as Gabriela.

Lời Giải

Ke v in i s 2 t im es a s o l d a s G ab r i e l a . 12 ye a rs a g o, Ke v in w a s 6 t im es a s o l d a s G ab r i e l a .

Lời Giải

Gabriela^{'} s age is : 15

Kevin^{'} s age is : 30

Các bước giải pháp

Translate the problem into an equation:

2 x - 12 = 6 (x - 12)

Giải

x, 2 x - 12 = 6 (x - 12) : x = 15

Tìm age

Gabriela^{'} s age is : 15

Kevin^{'} s age is : 30

Ví dụ phổ biến

the sum of 12 and one third of a number is 15 You deposit 170 in an investment account that earns 6% annual interest compounded annually.What is the balance of the account after 8 years?A die is tossed 3 times. What is the probability as a decimal of no fives turning up?the diện tích of a rectangular piece of paper is 56 square mm. its length is 7 mm. find the breadth Edgar and Colette deposit 1,000.00 into a savings account which earns 14% interest compounded monthly. They want to use the money in the account to go on a trip in 3 years. How much will they be able to spend?