who invented aeroplane
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Karl Jatho has invented aero plane
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What will be the ratio of the ages after 5 years?
Rina lost her weights inn the ratio 5:3. Her original wights was 80 kg. What is her new weight.
Easy
ANSWER
Reena's weight =80kg
Let her reduced weight =x
Ratio of weight =5:3 (given)
∴80:x=5:3
product of means = Product of extremes
x×5=80×3
x=580×3
x=48
Here, new reduced weight =x=48kg
a rectangular garden is 185m long and 220m wide.It has two roads in its centre of uniform width of 4m, one parallel to its length and the other parallel to its breadth. Find the cost of levelling the the roads at rupee 2.50 per square metre.
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