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Answer :
(a)For plotting the graph take ‘Number of apples, on the x-axis and ‘Cost of apples (in ₹)’ on the y-axis and start marking the given data in order:
(b) (i) The distance covered by the car during the period 7:30 am to 8 am is 120 km – 100 km = 20 km.
(ii) The car had covered a distance of 100 km at 7:30 am, .
(c) (i) Yes
(ii) The interest on ₹ 2500 is ₹ 200 for 1 year.
(iii) To earn the interest of ₹ 280 ,₹ 3500 should be invested.