Answer:
-4
Step-by-step explanation:
Let the number be x
If she multiplies the number by 2, it will become 2x
If divided by 4, it will be 2x/4, if she multiplies the result by itself, we will have:
2x/4(2x/4) = 4x/16
If she subtract the original number from 6 and divide by 10, we will have;
x-6/10
Equating both expressions
4x/16 = x-6/10
Cross multiply
4x(10)= 16(x-6)
40x =16x-96
40x-16x = -96
24x = -96
x = -96/24
x = -4
Hence the number is -4