A dozen indential books are stacked one avobe the other to a height of 48 cm. IF 3 more books are added to the stack, then the height of the stack will become. a) 60 cm b) 52 cm c) 0 cm d) 57 cm

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Solution

A dozen = 12
Height of A dozen (12) identical book =48 cm
when 3 more book added =12+3 =15

Height of 1 book =12÷48=4

.˙. Height of stack = Height of 15 book ( = 4 x 15 = 60cm

option (a) is correct.

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A dozen indential books are stacked one avobe the other to a height of 48 cm. IF 3 more books are added to the stack, then the height of the stack will become. a) 60 cm b) 52 cm c) 0 cm d) 57 cm

A dozen = 12 Height of A dozen (12) identical book =48 cm when 3 more book added =12+3 =15 Height of 1 book =12÷48=4 .˙. Height of stack = Height of 15 book ( = 4 x 15 = 60cm option (a) is correct.

A dozen = 12
Height of A dozen (12) identical book =48 cm
when 3 more book added =12+3 =15

Height of 1 book =12÷48=4

.˙. Height of stack = Height of 15 book ( = 4 x 15 = 60cm

option (a) is correct.