SOLUTION: Joan 3 times as old as her sister. In 3 years, she will be two more than twice the age of her sister will be then. What are their ages? Using variable g, express your answer to the
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-> SOLUTION: Joan 3 times as old as her sister. In 3 years, she will be two more than twice the age of her sister will be then. What are their ages? Using variable g, express your answer to the
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Question 1166369: Joan 3 times as old as her sister. In 3 years, she will be two more than twice the age of her sister will be then. What are their ages? Using variable g, express your answer to the following. (use small letter and no space/s in between)
a. Sister's age
b. Joan's age
c. Sister's age in three years
d. Joan ages in three years
e. Equation
ANSWER:
a. g
b. 3g
c. g+3
d. 3g+3
however in letter e (equation) how do i write it correctly?
(3g+3) = 2+2(g+3) or 3g+3 = 2+2(g+3) or 2+2(g+3) ? Found 2 solutions by ikleyn, josgarithmetic:Answer by ikleyn(52776) (Show Source):
a. g (<<<---=== the sister's age)
b. 3g
c. g+3
d. 3g+3
e. equation 3g + 3 = 2 + 2*(g+3)
3g + 3 = 2 + 2g + 6
3g - 2g = 2 + 6 - 3
g = 5.
ANSWER. The sister is 5 years old. Joan is 15 years old.
CHECK. In 3 years, Joan will be 15+3 = 18 years old; the sister will be 8 years old.
18 = 2 + 2*8. ! Correct !
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