some zings are zangs. Some zangs are zongs. Which of the following can we conclude for sure?

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Job Solution Dhaka Bank Ltd Dhaka Bank Ltd - MTO - 10.07.2009 গণিত
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A barge, when empty, travels twice as fast as when it is full. If it travels 20 miles north with a cargo , spends 30 minutes for unloading, and returns to its original port empty . completing the entire trip in 8 hours, what is the speed of the barge when it is empty?

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A solution that contains 20% sugar by weight is made sweeter by doubling the amount of sugar.The percent of sugar, by weight, in the new solution is --

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If the ratio of boys and girls in a school is 5: 3 . which of the following could not be the number of students in the school?

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A Fast food shop sells pizza in 3 sizes: large, super, and jumbo. One day the shop sold 240 pizzas, and the ratio of sales of large to super to jumbo was 8 : 17 : 15. How many jumbo pizzas were sold that day?

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