An all female guitar septet is getting ready to go on stage. the lead guitarist, kira, who is always in tune, plucks her low e string and the other six members, sequentially, do the same. each member records the initial beat frequency between her low e string and kira's low e string.

to tune an instrument using beats, more information than just the beat frequency is needed. in addition to recording the initial beat frequency , each member, except diane, also records the change in the frequency (increase or decrease) when they increase the tension in their low e string.

rank each member on the basis of the initial frequency of their low e string.
rank from largest to smallest. to rank items as equivalent, overlap them.

aiko=3hz, fbeat increases
chandra=1hz fbeat decreases
evita=5hz fbeat decreases.
freja=3hz fbeat decreases.
buffy=4hz fbeat increases.