Everyday Mathematics (IMO- Mathematics Olympiad Class 9): Questions 74 - 78 of 99

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Question number: 74

» Everyday Mathematics

MCQ▾

Question

A rectangular park 60 m long and 40 m wide has concreate crossroads running in the middle of the park and rest of the park has been used as a lawn. If the area of the lawn is 2109 sq. m, then what is the width of the road?

Choices

Choice (4) Response

a.

6 m

b.

3 m

c.

4 m

d.

5 m

Question number: 75

» Everyday Mathematics

MCQ▾

Question

A student was asked to divide a number by 8 and add 16 to the quotient. He, however, first added 16 to the number and then divided it by 8, getting 160 as the answer. The correct answer should have been________

Choices

Choice (4) Response

a.

174

b.

162

c.

154

d.

198

Question number: 76

» Everyday Mathematics

MCQ▾

Question

Reema bought pens at Rs. 2.60 each and y getting cards at 80 paise each. If the pens cost Rs. 12 more than the cards, the equation involving x and y are ________

Choices

Choice (4) Response

a.

13x4y=6

b.

260x8y=100

c.

13x4y=60

d.

260x8y=12

Question number: 77

» Everyday Mathematics

MCQ▾

Question

P, Q and R enter into partnership by making investments in the ratio 2:7:9 . After a year, R invests another Rs. 452500 while P withdrew Rs. 65400. The ratio of investments then changes to 32:49:125 . How much did R invest initially?

Choices

Choice (4) Response

a.

Rs. 228900

b.

Rs. 228990

c.

Rs. 225899

d.

Rs. 224516

Question number: 78

» Everyday Mathematics

MCQ▾

Question

Tea worth Rs. 126 per kg and Rs. 135 per kg are mixed with a third variety in the ratio 1:1:2 . If the mixture is worth Rs. 153 per kg, the price of the third variety per kg will be

Choices

Choice (4) Response

a.

Rs. 169.50

b.

Rs. 180

c.

Rs. 170

d.

Rs. 175.50

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