Question

Apples cost L rupees per kilogram for the first 30 kilograms and Q rupees per kilogram for each additional kilogram. If the price paid for 33 kilograms of apples is Rs. 1167 and for 36 kilograms of apples is Rs. 1284, then the cost of the first 10 kgs of apples is:

Answer 1

30L + 3Q = 1167 - (1)

30L + 6Q = 1284 -(2)

Subtracting (2) from (1),

30L + 6Q = 1284

-30L + 3Q = 1167

Hence 3Q = 117

Hence, Q=117/3

Q=39

30L + 6*39=1284

30L= 1284-234

L=1050/30

L=35

First 10 kg = 35*10

Hence, Rs.350 for the first 10kgs of Apples

Answer 2

Answer:

350

Step-by-step explanation:

Cost of 33 kilograms of apples         = Rs. 1167

Cost of 36 kilograms of apples         = Rs. 1284

3 kilograms of apples cost (after 30kg) = 1284 – 1167 = Rs. 117

Cost of 30 kilograms of apples         = 1167 – 117

                                                                         = Rs. 1050

Cost of 10 kilograms of apples         = 1050/ 30 x 10

                                                                         = Rs. 350