For the following questions answer them individually
An experienced carpenter can complete a woodwork in 8 days. A young carpenter can complete the same work in 12 days. Both work together for 3 days, and then the latter leaves. How many days will be taken by the former to complete the remaining work?
X and Y together have ₹1300. If ₹10 less than three-fifth of the amount of X is equal to half of the amount of Y, then how much does X have?
A man can row a boat in still water at a speed of 5 m/s. He covers a stretch of 200 m in a river downstream during high and low tides in 10 s and 25 s respectively. What is the ratio of the speed (in m/s) of the water flowing in the river during high and low tides?
What is the proportion equivalent to $$\frac{X}{Y} : \frac{Y}{Z} : \frac{X}{Z}$$, if $$X : Y : Z = 4 : 7 : 9$$?
A temple has five bells which ring at the intervals of 12, 15, 16, 20, and 25 minutes respectively. If they ring together at midnight, then at what time next will they ring together?
A spherical ball of diameter 35 cm rolls 20 times. How much is the distance (in m) covered by it?(Take $$\pi = \frac{22}{7}$$)
What is the value of: $$(1 \times 2 + 3 \times 4 + 5 \times 6 + 7 \times 8 - 9 \times 10) \div 2 of 5$$ ?
30 dozens of nuts were bought for ₹14400. If the nuts are sold in a packet of 5 for ₹250, then how much profit is earned?
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