let no. of shoe strings x price for shoestrings x*x
then no. of pins 4x price for pins 4x*4x
nd handkerchiefs 8x price for handkerchiefs 8x*8x
total money she had is 364(but this is not mentioned in question)
x^2+16x^2+64x^2 364
91x^2 364
x 2 so total no. of handkerchiefs are 8x 16
i.e. 8*2 16(ans) sure
