Tutors Answer Your Questions about Proportions (FREE)
Question 983718: if ratio of age of A:B is 6:5and the age of each C and D is 9/10 times that of B.age of F is less than A but greater tha B.the ratio of age of b and E is 2:3 also age of A is 3years less than E.what is the ratio of age of A and F,if all ages are in integer?
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 988584: A passenger train travelled at a speed of 72 km/h. A man on the passenger train observed a goods train travelling at a speed of 54 km/h in the opposite direction. If the goods train passed him in 8 seconds, find the length of the good train. (Hint : Model the problem and draw a diagram). I have solved it and the length of the goods train is 280m,is it possible to find the length of the passenger train.
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Click here to see answer by josgarithmetic(39616) |
Question 988494: Kevin invested his savings in two investment funds. The amount he invested in Fund A was 4 times as much as the amount he invested in Fund B. Fund A returned a 5% profit and Fund B returned a 2% profit. How much did he invest in Fund B, if the total profit from the two funds together was $1320?
Amount invested in fund b:$__
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 988820: 1.The sum of the digits of a two-digit number is 8. The number with the digits interchanged is 16 less than thrice the original number. Find the number.
2.the units digit of a two-digit number is one less than one-half the tens digit. The number with the digits interchanged is 5 more than thrice the sum of the digits. Help me thanks
Click here to see answer by KMST(5328)  |
Question 990559: A train covers a distance of 720km at a speed of x km/h. On the return trip it travels at an average speed of y km/h and completes the whole journey in an hour less. If the speed during the reurn journey was 10km /h more, what were the speeds in minutes/sec.
Click here to see answer by macston(5194)  |
Question 991290: use proportions to solve
a transformer reduces or increases the voltage (V) of an alternating current based on the ratio of the coils in the input circuit (N in) to the coils in the output circuit (N out) according to the following proportion: V out/ V in = N out/ N in. A transformer is used to reduce the 120V household current to the 18V used in model train sets. If the transformer has 180 coils on the input circuit, how many coils are on the output circuit?
Click here to see answer by ikleyn(52776)  |
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Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265
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