Question

60+70+80+90=(6+7+8+9)*(what number?)

Answer 1

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Hi Friend,

60+70+80+90=(6+7+8+9)×(x)
300=3x
x=300/3

x=100

The number is 100

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Answer 2

Let, the number be x

So,
60+70+80+90=(6+7+8+9)*x
=>300=30*x
=>30*x=300
=>x=300/30
=>x=10
•°• The number is 10

Hence,
60+70+80+90=(6+7+8+9)*10