Let, the cost of a belt = x
cost of a wallet = y
Then, system of equations would be:
x + y = 42
7x + 4y = 213
Multiply 1st equation by 4,
4x + 4y = 168
Substitute it from 2nd equation,
3x = 45
x = 15
Now, substitute it in 1st equation,
15 + y = 42
y = 42 - 15 = 27
In short, Belt costs $15 and wallet costs $27
A)
15x4=60
27x4=108
60+108=
four belts and four wallets cost 168
B) 3x15=
<span>three belts cost 45</span>
Answer:
a gas can hold 7×10=70 litters of gas
Ok thanks for letting me know !
Answer:
1 day = 225 liters
2 days = 450 liters
I don't think it is proportional..
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Step-by-step explanation:
Proportional is like..
.
1 day = 12 bags of rice
2 days = 11 bags of rice
3 days = 10 bags of rice