For the following questions answer them individually
In a quadrilateral, the ratio of the three angles is 6 : 4 : 9. The remaining fourth angle is equal to 113°. Find the difference between the largest and smallest angles of a quadrilateral.
A person brought 35 kg of wheat at Rs. 40 per kg and 40 kg of other variety of wheat at Rs. 65 per kg. He mixed the two varieties together and sold the mixture at a gain of 20%. Find the selling price per kg of the mixture.
If a person spends Rs. 1715 to buy 40 pens and pencils, how much amount will have to be paid by him to buy 16 pens and 28 pencils ?
What will come in the place of question mark (?) in the following number series ?
For the following questions answer them individually
A boatman rows upstream at the rate of 13 kmph and downstream at the rate of 20 kmph for the same distance. Find the rate of boat in still water.
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