Summands 5215

Divide the number into two summands, which are in the given ratio:
a) 3, 11:4
b) 5.1 8:9
c) 1 7:3
d) 0.42 1:6

Correct answer:

a1 =  2.2
a2 =  0.8
b1 =  2.4
b1 =  2.7
c1 =  0.7
c2 =  0.3
d1 =  0.06
d2 =  0.36

Step-by-step explanation:

a1​=3⋅ 11/(11+4)=511​=251​=2.2
a2​=3⋅ 4/(11+4)=54​=0.8
b1​=5.1⋅ 8/(8+9)=512​=252​=2.4
b1​=b2​=5.1−b1​=5.1−2.4=1027​=2107​=2.7
c1​=1⋅ 7/(7+3)=107​=0.7
c2​=1−c1​=1−0.7=103​=0.3
d1​=0.42⋅ 1/(1+6)=503​=0.06
d2​=0.42−d1​=0.42−0.06=259​=0.36

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arithmeticbasic operations and conceptsnumbersGrade of the word problem

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