Q:

A) 4% of a | B) 6% of a |

C) 8% of a | D) 10% of a |

Answer: A) 4% of a

Explanation:

Explanation:

20% of a = b

=> (20/100) * a = b

b% of 20 =(b/100) x 20 = [(20a/100) / 100] x 20= 4a/100 = 4% of a.

0
0

1
85

0
61

1
54

0
55

Q:

A) 30% | B) 40% |

C) 44% | D) 48% |

Answer & Explanation
Answer: C) 44%

Explanation:

Explanation:

Let initial rent be rs 10

And initial rooms be 10

So initial collection = 10*10 = Rs 100

Now new rent = 10 + 20% of 10 = 12

New no of rooms = 10 + 20% of 10 = 12

So new collection = 12*12 = 144

% change in collection = (144-100)/100*100 = 44%

3
299

Q:

A) 45 | B) 55 |

C) 65 | D) 75 |

Answer & Explanation
Answer: D) 75

Explanation:

Explanation:

x = 30% of z = 30z/100 = 3z/10

y = 40% of z = 40z/100 = 4z/10

According to the question,(x/y)*100 = p%

p% = 3z/100/4z/100×100= 75%

3
202

4
315