exam Maths Puzzle Numerical Ability

x-2 over 5 = 3 over 10

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exam Other Question

Our galaxy is estimated to be 5.6 x 10^19 mi across. How long (in hours) would it take a spaceship to cross the galaxy traveling at 37,500 mph. a+7=16
12+x=21
4d=60
15=u
-
3
b
- =12
7