Answer:
Step-by-step explanation:
Let us represent:
Number of rupees that:
Sara has = x
Hina = y
Arsalan = z
Sara,Hina and arsalan has rupees 930
x + y + z = 930..... Equation 1
if Sara has 7 more than Hina
x = y + 7
y = x - 7
Arsalan has 3 times what sara has
z = 3x
We substitute x - 7 for y and 3x for z in Equation 1
x + y + z = 930..... Equation 1
x + x - 7 + 3x = 930
5x - 7 = 930
5x = 930 + 7
5x = 937
