Question

李明以两种形式分别储蓄了2000元和1000元，一年后全部取出，可得利息43.92原。已知两种储蓄的年利

李明以两种形式分别储蓄了2000元和1000元，一年后全部取出，可得利息43.92原。已知两种储蓄的年利率的和位3.24%，则这两种储蓄的年利率各是多少？ 【要过程】

Answer 1

Casting cylinder beam Diamond Press

To l400ram × l600mm (weight of a 22t, a modulus M 26.3cm) (2) checking method used to calculate the modulus of the riser. Can not take the mouth of the steel that meets the liquid feeding section of the casting or heat needs. Must also make use of casting shrinkage required to verify the size of riser. According to: G ,---- G. (1) where: G is a feeding part of the casting weight: G, - riser weight; knock a riser feeding efficiency; - liquid steel solidification shrinkage. Take call-in a l7 (consider the two complement pouring), -504: G A 22 × 52.8t riser is not a heavy '22t. And to re-feeding of casting for large casting and forging turtle 52.8t. To meet the feeding requirements. 4.2.2 Calculation of Cold Iron Heavy fuel tank flange area Estuary and no way to use the riser feeding. Control must be freezing cold iron. Consider the use of high pressure castings for internal quality requirements. Decided to use sand hanging outside the chill process. Wall thickness of cold iron to take half of the flange. Spacing of 10ram. Are distributed in the fuel tank to suppress the lower ring and flange. The use of \Outside the rational design of cold iron. Order to meet the feeding requirements. 4.3 gating system and casting solution did not account correctly casting system for casting solidification process control. To avoid cracks, slag, porosity, cold shut and other defects is very important. 4.3.1 Gating System gating system cross-sectional area selected by the following percentages: ∑F straight: ∑F Wang: ∑F are used in a 1:1.1:1.5 runner refractory tube. Order to control the solidification of castings,uggs kopen, an effective solution to tank port side of the hot spot problem. In addition to the local iron by external chilling cold outside. Another layered casting process. Has the following advantages: (1) to avoid both the upper and lower mouth into the molten steel and casting production, erosion, flow; (2) benefit scum and exhaust; (3) in favor of solidification and feeding; '(4) to avoid casting the lower part of overheating caused shrinkage, shrinkage; (5) can control the rate of increase of different heights. 4.3.2 Scenario 1 ladle casting and 2 co-pouring ladle. 1 begin pouring ladle. After about 40s to stop pouring, shift. Stepped into the gating system; At the same time. 2 started pouring ladle. Poured two packets together. Pouring time calculation: pouring time t a (2) l '【I type in: G - Casting weight or partial weight. kg;, z holes one by one the number of packets ;(,-- molten steel flow, kg / s. 1 ladle pouring system in a separate pouring time: s one by one, 38 two-time pouring molten inclusion :46700 -11 300: A - one by one S9s rise velocity of molten steel: V = H / (t1 +,uggs nederland,:) a 1569/97-16ram/s where. H - the height of casting by pouring position. mm increase in the speed of the molten steel in the cast in line with the rate of increase requirements. 4.4 Other process measures (1) The pit shape,Moncler sale, shape before laying the sand bed. In order to facilitate the exhaust. placed in a pit l50mm all corners of the exhaust pipe. (2) No.1-core exhaust is critical, bleed air from the bottom. Meanwhile, in order to increase its stability. using large head and from the lower lock. (3) To prevent erosion No.1 steel core. to prevent oxidation of the skin and non-metallic inclusions into the casting. to be steel After rising to the riser height of 300ram. from the riser into the private gate. (4) In order to improve the efficiency of riser feeding. poured into the anti-shrinking agent, and after full cover agent .3 ~ 4h after the first meeting Riser . every 4 ~ 6h second meeting Riser. 5 discussions Diamond Press cylinder beam casting process has taken a series of measures. castings inspection by ultrasonic testing,ugg boots günstig, magnetic particle inspection and pressure test. the quality of full compliance with design requirements. explain the process scheme is correct. by casting the beam cylinder. have the following experience: (1) Heavy Section Steel Castings is entirely possible measures to control the solidification process. to meet the quality requirements; (2) layered casting process, the thick solution large. particularly difficult to be lower riser feeding of steel castings has a distinct role. but it should calculate the pouring time,moncler homme, the rise in liquid level measurement a good position and molten steel ladle shift attention to when operating smoothly. or easily in the formed on the surface of molten steel slag; (3) modeling material selection is critical. This is the premise of good quality castings. The process scheme faces water glass sand chromite sand is the right choice. But because of No.1 sand core process back limited conditions and used equipment, sodium silicate limestone sand. the actual production is \. The first heavy machinery plant. .199 Harbin Institute of Technology (February 2004 Date Received l1) Editor Long Li Jian 33

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Answer 2

设存2000元的年利率为X，则2000X+1000（3.24%—X)=43.92.求出X年利率为1.152%，存1000元的年利率为2.088%。

Answer 3

设2000元的利率是a，1000元的利率是b
列方程组2000a+1000b=43.92
a+b=3.24%
求解就行了，a=1.152%，b=2.088%