Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
Mrs. Snyder used to spend 40% of her monthly income on rent and utilities. Her salary was recently increased by $600 so now her rent and utilities only amount to 25% of her monthly income. How much was her previous monthly income?

### Response:
 Hebu tuchukue kipato chake cha awali kila mwezi kuwa p
Gharama ya kodi yake ya nyumba na huduma za umeme na maji ilikuwa 40% ya p ambayo ni (40/100)*p = 2p/5
Mshahara wake uliongezeka kwa $600 hivyo sasa ni p+$600
Gharama ya kodi yake ya nyumba na huduma za umeme na maji sasa inafikia 25% ya (p+$600) ambayo ni (25/100)*(p+$600) = (p+$600)/4
Kwa kulinganisha mawili hayo ya gharama ya kodi ya nyumba na huduma za umeme na maji: 2p/5 = (p+$600)/4
Kwa kuzidisha pande zote mbili kwa 20 tunapata 8p = 5p+$3000
Kwa kutoa 5p kwa pande zote mbili tunapata: 3p = $3000
Kwa kugawanya pande zote mbili kwa 3 tunapata p = $3000/3 = $<<3000/3=1000>>1000