the tariff structure of a telephone bill is given by Total=12c/min +m ×R1,10 min + R75,75 whe re n = number of minutes of local landline calls m=number of minutes to cellphones and R75.75 is the monthly rental b. if the total for a bill is R131.19 and calls totalling 36 minutes were Made to cellphones, calculate how many minutes worth of calls were made to local landline numbers​