A worker is paid a regular rate of Rs.20 for completing a survey. The worker completes 100 surveys per week. For any survey involving the use of her cellphone, she is paid at a rate of that is 10% higher than her regular rate. If she completed 70 surveys involving the use of her cellphone, how much did she get that week?	Pick one: A) 2140 B) 1140 C) 550 D) 650 E) 750

Rationale: amount earned using her cell phone = 70 * 22 = 1540 earned for remaining surveys = 30 * 20 = 600 total earning = 2140 answer : a
Answer: A