exam Maths Puzzle Numerical Ability

Ingrid"s age is 5 years less than 2 times Danika"s age. If Ingrid is 25 years old, which equationcan be used to determine Danika"s age?

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exam Other Question

Hoe many pounds of hamburger that costs 1.60 per pound must be mixed with 70 pounds of hamburger that costs 2.10 per pound to make a mixture that costs 1.70 per pound. v-4(4-v)=-2(2v-1)

9-2m/7=19

3(x-0.87)-2x=4.98

1/2q-6=1/5q

0.56+3.4=0.26+12.4

4x-2=-8+5x

3-3(5-x)=0