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Subject Mathematics
626. The ratio of the number of boys to that of girls in a class is 5 : 7. When 24 more boys enter, the ratio is reversed. How many girls in the class?
628. Two-thirds of the members of a committee are women, one-fourth of the male members of the committee are married. If there are 9 bachelors in the committee, how many members are there altogether?
630. Mr. Ramzan, owner of a department store, decided to raise the price of a particular item by exactly 10%. Of the following which cannot be the new price?
631. Jony weights twice as much as Suzan’s weight is 60% of Sami’s weight. Manik’s weight is 50% of Lynda’s weight. Lynda weights 190 % of jony’s weight. Which of these 5 people weight the least?
633. At a certain high school, the respective weights for the following subjects are: General Math 3, Bangla 3, History 2, Science 2 and Art 1. What is a student’s average whose marks were the following: Geometry 89, Bangla Literature 92, History 94, Biology 81, and Sculpture 85?
634. Mrs. Hena needs to makes a cake and some cookies.The cake requires 3/8 cup of sugar and the cookies require. cup of suger. Mrs. Hena has cups of sugar. Does she have enough sugar, or how much more does she need?
636. During a sale, a furniture shop gives 50% of on the retail price of a desk. On Friday, it gives an additional 20% off on all furniture. The desk’s retail price was Tk. 320. How much will the desk cost on Friday?
637. Sobuj bought three pieces of material. The first piece is 1 year 2 feet 6 inches long, the second piece is 2 yards 1 feet 5 inches long, and the third piece is 4 yards 2 feet 7 inches long. If the cost of the material is Tk.36 per yard, how much did Sobuj spent?
638. From 7: 00 AM to 11:00 AM it rained 2.25 inches. At 11.00 AM the rain increased to fall at a rate of 1.25 inches every two hours. How many inches of rain landed on the ground by 5.00 PM?
641. In a certain fashion house, which has four sizes of a specific shirt, there is one-third as many small shirts as medium shirts, and ½ as many large shirts as small shirts. If there are as many X-large shirts as large shirts, what percent of the shirts in the store are medium?
643. A retail store regularly sells stock at a discount of 25% to 40%. If an additional 25% were deducted from the discount price during, a special sale, what would be the lowest possible price of an item costing Tk. 140 before any discount?
644. In a 100 m race, jami beats Rony by 4 sec. If Jami allowed Rony to start 16 m ahead of him, them Jami and Rony reach the finishing point at the same time. How long does jami take to run the 100 m race?
645. Goni went to market with certain amount of money. With this money he can buy either 50 apples or 40 pears. He retains 10% of the money for bus fare and buys 20 peras. How many apples can he buy?
646. 60% of the students of a collage are male. 60% of the male in the college speck French and 40% of the students of the college speck French. What percent of the female in the college do not speak French?
647. Three athletes X, Y and Z start running around a circular track of length 60 m from the same point simultaneously in the same direction at speeds of 3 m/s, 5 m/s and 9 m/s respectively. After how long will they meet for the first time after they started running?
648. A garments factory employs 3 categories of works K. M and N. The efficiency of the 3 categories of workers to do a specific task is in the ratio of 3:5:6 respectively and the factory employs 15 of category K, 12 of category M and 3 of category N. If the total wages paid to the entire group of 30 works is Tk. 492 per hour, what will be the wages earned by a category N worker for an 8-hour day?
649. A rectangular field of 200m by 120m has two roads running along its centre, one along the length and the other along the width. If the width of the roads is 15m, what is the area covered by the two roads.