math problem for you :D?
2007-12-17 3:23 pm
Bob paid 3 less than Tim for his lunch at a local pizza parlor. Together they spent $7.80. How much did Bob spend for his lunch?
回答 (6)
2007-12-17 3:34 pm
✔ 最佳答案
3 times less or $3 less?If 3 times less than
Bob = x
Tim = 3x
x+3x = 7.8
4x = 7.8
x =1.95
If $3 less than
Bob = x - 3
Tim = x
x + x - 3 = 7.8
2x - 3 = 7.8
2x = 10.8
x = 5.4
x - 3 = 2.4
2007-12-17 11:36 pm
idk
2007-12-17 11:34 pm
Bob=y
y + y + 3 = 7.8
2y +3 = 7.8
2y = 7.8 - 3
y = 4.8/2
y = 2.4
â´Bob spent $2.4.
y + y + 3 = 7.8
2y +3 = 7.8
2y = 7.8 - 3
y = 4.8/2
y = 2.4
â´Bob spent $2.4.
2007-12-17 11:32 pm
if you mean 3cents less, the answer is $3.885
using the formula x +x + 0.03 = 7.80
if you mean $3 less, the answer is $2.40
using the formula x +x +3 = 7.80
where x is what bob spends.
cheers!
using the formula x +x + 0.03 = 7.80
if you mean $3 less, the answer is $2.40
using the formula x +x +3 = 7.80
where x is what bob spends.
cheers!
2007-12-17 11:28 pm
suppose Bob paid x, so tim payed 3x
and x+3x=7.8
4x= 7.8
x=1.95 for Bob and 5.85 for Tim
and x+3x=7.8
4x= 7.8
x=1.95 for Bob and 5.85 for Tim
2007-12-17 11:28 pm
2.4 $
收錄日期: 2021-05-01 01:22:30
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