A wholesale dealer charges RS 20 for first quarter of a metre of cloth and Rs 10 for every additional quarter of metre of cloth. find the charges in rupees for Y metres of cloth.

Help me with this. It's ans is given as 80+40(Y-1)

Asked by sonal.gentle | 14th Nov, 2018, 02:50: PM

Expert Answer:

Rs 20 for 1 quarter
Rs 30 for 2 quarter
Rs 40 for 3 quarter
Rs 50 for 4 quarter ......1 metre
for y meters 
there are 4y quarters
1st quarter = Rs20
4y-1 quarter rs 10 each
20+(4y-1)×10

Answered by Arun | 15th Nov, 2018, 10:20: AM