Ratio proportion (ratios+ages )🌹
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- 10 февр. 2022 г.
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If the ratio of present ages of Parul, Amit and Sanju is m : (2m - 1) : (2m + 1), and the sum of ages of all 10 years ago was 70 years. Parul's age 2 years ago was half of Amit's present age. What will be Amit's age when Sanju's age becomes three times of Parul's present age?
3T=4L=8C==>24 T=8hr. L=6hr. 6*2=12 step C=3hr. 3*3=9 step 12+9/12-9=7/1 answer.
Anyone Solve this problem and share your Approach ??
cnd 5:13 8:16 or 7:17 10:20 or 2:7 5:10
options a)2 b)3 c)5 d)CND e)none
без подписи
mother : x daughter : 60-x father : y y + (y-x) /(60-x) + (y-x) = 2/1 2y - x = 120-4x +2y 3x = 120 x = 40 60-40= 20
без подписи
без подписи
x:2x M F 57 1. 2 M-57=2*(57-F) M+2F= 171...1 M+F=118....2 F=53, M = 65 65x+69=(x+1)66 x= 3 Employees = 3x= 9 Or 57-x 57+2x 57 ---------------- 2 : 1 (F:M) 57-x + 57+2x=118 x=4 M=65,F=53 number of males(by shifting method)=3 Total employees=3×(2+1)=9
без подписи
At present excluding the two child total age of the family at present is 280 E : Y 2x : x The possible ages are ( 2 , 1 ) , ( 6,3 ), ( 8,4 ) and (4, 2) When x = 1, avg of the family becomes 283/9 = 31.44 When x =2, Avg becomes 286/9 = 31.77 When x = 3 Avg becomes 289/9 = 32.11 When x = 4 Avg becomes 292/9 = 32.44 So A, B and C are possible D cannot be possible
280+(1+2)==283 -->31.44 280+(2+4)==286 -->31.77 280+(3+6)==289 -->32.11 280+(4+8)==292 -->32.44 280+(5+10)==295 -->32.77 32.33
K. M. A 3.6y. Y---yr ago X--------prsnt X+2 X+2)×4/5--------(+3yr) 3.6y+4=(x+2)×4/5 4x-18y=12---(1) X-(y+1)=37 X-y=38---(2) X=48
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5 10 20 5x+10(12-x) 10y+15(12-y) 20*12 5x-10x+120 10y-15y+180 240 -5x+120 -5y+180 240 240==24 So *10 in all profit amount 5x-10x+120=100 -5x+120=100 5x=20 X=4 -5y+180=150 5y=30 Y=6 4+6=10
5000*1. 10000*1. 20000*1 + + 5000*x. 5000*x ------------------------------------------- 10. 15. 24 5+5x --------=10/24 20 X=2/3 10+5y ----------= 15/24 20 Y=1/2 2/3*12=8 months invested... After 4 months 1/2*12 6 months invested after 6 months 6+4=10
без подписи
Equate difference M R K 5 3 4 ==> 10 6 8 15 11 13 5=10 6=12-5=7