HEY GUYS !!
PLEASE SOLVE THIS QUESTIONS......
....I WILL MAKE YOU BRAINLIST
Answers
Answer:
(i) - 1.5, 1.66
(ii) 4% decrease
Step-by-step explanation:
(i)
Let the initial(original) price be 'x'.
Given that there is 10% reduction in the price of wheat.
Reduced price of wheat = x * (90/100)
= 90x/100
= 9x/10.
According to the given condition,
⇒ (30/9x/10) - (30/x) = 2
⇒ (300/9x) - (30/x) = 2
⇒ 30 = 18x
⇒ x = 5/3
⇒ x = 1.66
Then, reduction of price = 9x/10
= 9(1.66)/10
= ~1.5
Therefore:
⇒ Reduced price of wheat = 1.5 rupee
⇒ Original price of wheat = 1.66 rupee.
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(ii)
Let the initial base be b and height be h cm.
Initial Area = (1/2) * b * h
= (1/2)bh cm².
(i)
Given that height is decreased by 20% and base is increased by 20%.
New height = (80% of h)
= (80h/100) cm
= 4h/5 cm.
New base = (120% of b)
= (120b/100) cm
= (6b/5) cm.
New area = (1/2 * 4h/5 * 6b/5)
= (24/50 bh) cm².
Decreased area = (1/2bh - 24/50 bh) cm²
= (1/50 bh) cm²
% decrease = (bh/50 * 2/bh * 100)
= 4%.
Therefore, decrease in area = 4%.
Hope it helps!
Answer:
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