Others Maths Puzzle

A 200m long 2m high and 40 cm wide wall is built by 20 men, 30 women and 50 children working 6 hours a day in 20 days. How long a wall 1.5 high 60 cm wide can be built by 20men 15 women and 40 children working 9 hours a day in 15 days(given men, women and children are equally efficient) ?

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Others Other Question

A. Both parties use capital and labour in the struggle to secure property rights.
B. The thief spends time and money in his attempt to steal (he buys wire cutters) and the legitimate property owner expends resources to prevent
the theft (he buys locks).
C. A social cost of theft is that both the thief and the potential victim use resources to gain or maintain control over property.
D. These costs may escalate as a type of technological arms race unfolds.
E. A bank may purchase more and more complicated and sophisticated safes, forcing safecrackers to invest further in safecracking equipment.
(a) ABCDE (b) CABDE
(c) ACBED (d) CBEDA For the word 'RAINBOW', how many words are there in which vowels are never together ? How many words are there in which A is always before I and I is always before O ? Explain the answers please.