2006-09-05 14:26:25 · 8 answers · asked by Carolyn L 1 in Science & Mathematics ➔ Mathematics
x = Betty's age
Convert the words to an equation:
"Eight times Betty's age" (8x)
"increased by" (+)
"3 times her age" (3x)
"is" (=)
"110" (110)
Or:
8x + 3x = 110
Combine 8x and 3x:
11x = 110
Divide both sides by 11:
x = 10
Betty is 10 years old.
Double check your answer:
8(10) + 3(10) =? 110
80 + 30 =? 110
110 = 110 (check!)
Therefore Betty is 10 years old.
2006-09-05 14:34:57 · answer #1 · answered by Puzzling 7 · 0⤊ 0⤋
Betty is 10 years old.
Let Betty's age be x.
Then,8x+3x=110
11x=110
x=110/11
Answer=10
2006-09-06 07:03:57 · answer #2 · answered by Firdaus 3 · 0⤊ 0⤋
Ok, let's see,
Betty Age
8*B + 3*B = 110
11B = 110
B =10
Betty is 10 years old.
2006-09-05 21:30:34 · answer #3 · answered by alrivera_1 4 · 0⤊ 0⤋
Let "a" represent Betty's age.
8a + 3a = 110
11a = 110
a = 110/11
a = 10
Betty is 10 years old.
2006-09-05 21:35:01 · answer #4 · answered by WaterfallOfDestiny 7 · 0⤊ 0⤋
her age is X. 8x+3x=110
11x=110
110 divided by 11=10
Betty is 10
2006-09-05 21:32:20 · answer #5 · answered by Bonnie R 2 · 0⤊ 0⤋
8x + 3x = 110
11x = 110
x = 10
2006-09-06 00:18:02 · answer #6 · answered by Sherman81 6 · 0⤊ 0⤋
13. and that's the score you'll get on a test if you don't do your own homework and learn your math yourself.
2006-09-05 21:28:39 · answer #7 · answered by ceprn 6 · 0⤊ 1⤋
110/3
36.6/8
4.5yrs old
2006-09-05 21:32:26 · answer #8 · answered by Big Red 2 · 0⤊ 0⤋