1.

John weighs three times as much as Karen. Two times John's weight plus Karen's weight is 875 pounds. How much does John weigh? How much does Karen weigh?

(Hint: Let j stand for John's weight, and let k stand for Karen's weight.)

2.

Mary is three times as old as Joe. Mary's age plus Joe's age is 24. Find Mary's age and Joe's age. (Hint: Let m stand for Mary's age, and let j stand for Joe's age.)

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Question

Mathematics

Raina Hooper

8 May, 14:10

1.

John weighs three times as much as Karen. Two times John's weight plus Karen's weight is 875 pounds. How much does John weigh? How much does Karen weigh?

(Hint: Let j stand for John's weight, and let k stand for Karen's weight.)

2.

Mary is three times as old as Joe. Mary's age plus Joe's age is 24. Find Mary's age and Joe's age. (Hint: Let m stand for Mary's age, and let j stand for Joe's age.)

Will mark as Brainlest ...

+2

Answers (2)

Know the Answer?

Genesis Hernandez · Answer 1

Answer 1 ...

j = 3k

2j + k = 875

substituting the first eqn into the 2nd

2 (3k) + k = 875

6k + k = 875

7k = 875

k = 875/7 = 125

thus j = 3 (125) = 375

Answer ... 2

m = 3j

m+j = 24

3j + j = 24

4j = 24

joe = 6yrs

mary = 3 (6) = 18yrs

Shayla Ferrell · Answer 2

1 answer

weight of karen = k

weight of john = j

by the question

j=3k

then

case II

2j + k = 875

2*3k+k=875

7k = 875

k=875/7

k=125

now

j=3k

=3*125

=375

hence john was 375 pound and karen was 125.

2 answer

let Mary be m and joes be j

by question

M=3J

CASE II

M + J=24

3J + J = 24

J = 24/4

J=6

NOW

M=3*6

M=18

Therefore Mary was 18 yrs old and Joes was 6 yrs old.