Answer:
3 men = Rs. 6000 = 4 days
Step-by-step explanation:
→ Find how much 1 man make in 3 days
1 man = Rs. 1500 = 3 days
→ Find how much he makes in 1 day
1 man = Rs. 500 = 1 day
→ Find how much one man can make in 4 days
1 man = Rs. 2000 = 4 days
→ Find how much 3 men will make
3 men = Rs. 6000 = 4 days
Equation (1)
Equation (2)
Get y alone in equation (1)
Insert y in equation (2)
Answer:
8.
Denote the equation : y = ax + b
Use the first 2 values of x and y in table:
3a + b = 21
5a + b = 35
Subtract the 2 equations:
=> 2a = 14 => a = 7 => b = 21 - 3 x 7 = 0
=> The solution is y = 7x
9.
Denote the equation : y = ax + b
Use the first 2 values of x and y in table:
5a + b = 17
10a + b = 22
Subtract the 2 equations:
=> 5a = 5 => a = 1 => b = 17 - 5 x 1 = 17 - 5 = 12
=> The solution is y = x + 12
Hope this helps!
:)
x - y = 16
x^2 + x^2 = 130
----------------
x^2 - y^2 = 256
+(x^2 + y^2 = 130)
2x^2 = 386
x^2 = 193
x = <span>13.892 (3DP)
----
</span>x - y = 16
13.892 - y = 16
-y = 2.108
y = -2.108
The numbers are: 13.892 and -2.108
