1/20 * 5/5 = 5/100
2/10, 3/15, 4/20
1-1/5=4/5
To answer your question, there are 84 possible ways. Once you find out how many different ways there are for 6 twenties and 5 twenties, you should notice the pattern that shows that the total amount for each twenty goes up by four each time, due to ever twenty equaling 4 fives, giving four more possibilities. Since there are only 6 twenties you can use, simply add 4+8+12+16+20+24 which equals 84. Below, I have written each possibility for your use. (6*20)+(4*5)+(1*1) (6*20)+(3*5)+(6*1) (6*20)+(2*5)+(11*1) (6*20)+(1*5)+(16*1) (5*20)+(8*5)+(1*1) (5*20)+(7*5)+(6*1) (5*20)+(6*5)+(11*1) (5*20)+(5*5)+(16*1) (5*20)+(4*5)+(21*1) (5*20)+(3*5)+(26*1) (5*20)+(2*5)+(31*1) (5*20)+(1*5)+(36*1) (4*20)+(12*5)+(1*1) (4*20)+(11*5)+(6+1) (4*20)+(10*5)+(11*1) (4*20)+(9*5)+(16*1) (4*20)+(8*5)+(21*1) (4*20)+(7*5)+(26*1) (4*20)+(6*5)+(31*1) (4*20)+(5*5)+(36*1) (4*20)+(4*5)+(41*1) (4*20)+(3*5)+(46*1) (4*20)+(2*5)+(51*1) (4*20)+(1*5)+(56*1) (3*20)+(16*5)+(1*1) (3*20)+(15*5)+(6*1) (3*20)+(14*5)+(11*1) (3*20)+(13*5)+(16*1) (3*20)+(12*5)+(21+1) (3*20)+(11*5)+(26*1) (3*20)+(10*5)+(31*1) (3*20)+(9*5)+(36*1) (3*20)+(8*5)+(41*1) (3*20)+(7*5)+(46*1) (3*20)+(6*5)+(51*1) (3*20)+(5*5)+(56*1) (3*20)+(4*5)+(61*1) (3*20)+(3*5)+(66*1) (3*20)+(2*5)+(71*1) (3*20)+(1*5)+(76*1) (2*20)+(20*5)+(1*1) (2*20)+(19*5)+(6*1) (2*20)+(18*5)+(11*1) (2*20)+(17*5)+(16*1) (2*20)+(16*5)+(21*1) (2*20)+(15*5)+(26*1) (2*20)+(14*5)+(31*1) (2*20)+(13*5)+(36*1) (2*20)+(12*5)+(41*1) (2*20)+(11*5)+(46*1) (2*20)+(10*5)+(51*1) (2*20)+(9*5)+(56*1) (2*20)+(8*5)+(61*1) (2*20)+(7*5)+(66*1) (2*20)+(6*5)+(71*1) (2*20)+(5*5)+(76*1) (2*20)+(4*5)+(81*1) (2*20)+(3*5)+(86*1) (2*20)+(2*5)+(91*1) (2*20)+(1*5)+(96*1) (1*20)+(24*5)+(1*1) (1*20)+(23*5)+(6*1) (1*20)+(22*5)+(11*1) (1*20)+(21*5)+(16*1) (1*20)+(20*5)+(21*1) (1*20)+(19*5)+(26*1) (1*20)+(18*5)+(31*1) (1*20)+(17*5)+(36*1) (1*20)+(16*5)+(41*1) (1*20)+(15*5)+(46*1) (1*20)+(14*5)+(51*1) (1*20)+(13*5)+(56*1) (1*20)+(12*5)+(61*1) (1*20)+(11*5)+(66*1) (1*20)+(10*5)+(71*1) (1*20)+(9*5)+(76*1) (1*20)+(8*5)+(81*1) (1*20)+(7*5)+(86*1) (1*20)+(6*5)+(91*1) (1*20)+(5*5)+(96*1) (1*20)+(4*5)+(101*1) (1*20)+(3*5)+(106*1) (1*20)+(2*5)+(111*1) (1*20)+(1*5)+(116*1)
1 pound. 20% means 20/100. 20/100 = 1/5. 1/5 * 5 = 5/5= 1.
1/20 * 5/5 = 5/100
1, 2, 7, 14 1, 2, 4, 5, 10, 20
5 per hundred or 5/100 which reduces to 1/20'th
2/10, 3/15, 4/20
5
20
2/10, 3/15, 4/20
1, 2, 4, 5, 10, 20, 25, 50, 100
The LCM is 20.
1 and 5
10, 15, 20
1-1/5=4/5