Increase in the price of crude oil in the given month with respect to the corresponding previous months:
In March ? (3980 - 3210) x 100 /3210 ? 24%
In April ? (4800 - 3980) x 100/3980 = 20.6%
In May ? (4940 - 4800)/4800 x 100 ? 3%
In June ? (4970 - 4940)/4970 x 100 = 0.6%
In July ? (5730 - 4970 )x100 /4970 = 15.3%
In August ? (6250 - 5730)x 100/5730 = 9.07%
In September ? (7020 - 6250)x 100/6250 = 12.32%
It is shown that in the months of July and September, increase in the crude oil price was more than 10% but less than 20% over the earlier month.
From above given chart ,
selling of white colours' cars = 26%
Since Cars of golden colour are 20% less popular than white coloured cars.
Required answer = 26 - 20 = 6%
Riya's overall percentage of Marks in all subject = (80 + 53 + 86 + 60 + 80 + 78)/6 = 437/6 ? 72.8%
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